Merge branch '5.6.x' into 5.7.x

oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/endpoint/AbstractWebClientReactiveOAuth2AccessTokenResponseClient.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -214,7 +214,7 @@ public abstract class AbstractWebClientReactiveOAuth2AccessTokenResponseClient<T
 	 * no scopes.
 	 */
 	Set<String> defaultScopes(T grantRequest) {
-		return scopes(grantRequest);
+		return Collections.emptySet();
 	}
 
 	/**

oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/endpoint/DefaultAuthorizationCodeTokenResponseClient.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -30,7 +30,6 @@ import org.springframework.security.oauth2.core.OAuth2Error;
 import org.springframework.security.oauth2.core.endpoint.OAuth2AccessTokenResponse;
 import org.springframework.security.oauth2.core.http.converter.OAuth2AccessTokenResponseHttpMessageConverter;
 import org.springframework.util.Assert;
-import org.springframework.util.CollectionUtils;
 import org.springframework.web.client.ResponseErrorHandler;
 import org.springframework.web.client.RestClientException;
 import org.springframework.web.client.RestOperations;
@@ -76,19 +75,12 @@ public final class DefaultAuthorizationCodeTokenResponseClient
 		Assert.notNull(authorizationCodeGrantRequest, "authorizationCodeGrantRequest cannot be null");
 		RequestEntity<?> request = this.requestEntityConverter.convert(authorizationCodeGrantRequest);
 		ResponseEntity<OAuth2AccessTokenResponse> response = getResponse(request);
-		OAuth2AccessTokenResponse tokenResponse = response.getBody();
-		if (CollectionUtils.isEmpty(tokenResponse.getAccessToken().getScopes())) {
-			// As per spec, in Section 5.1 Successful Access Token Response
-			// https://tools.ietf.org/html/rfc6749#section-5.1
-			// If AccessTokenResponse.scope is empty, then default to the scope
-			// originally requested by the client in the Token Request
-			// @formatter:off
-			tokenResponse = OAuth2AccessTokenResponse.withResponse(tokenResponse)
-					.scopes(authorizationCodeGrantRequest.getClientRegistration().getScopes())
-					.build();
-			// @formatter:on
-		}
-		return tokenResponse;
+		// As per spec, in Section 5.1 Successful Access Token Response
+		// https://tools.ietf.org/html/rfc6749#section-5.1
+		// If AccessTokenResponse.scope is empty, then we assume all requested scopes were
+		// granted.
+		// However, we use the explicit scopes returned in the response (if any).
+		return response.getBody();
 	}
 
 	private ResponseEntity<OAuth2AccessTokenResponse> getResponse(RequestEntity<?> request) {

oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/endpoint/DefaultClientCredentialsTokenResponseClient.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -30,7 +30,6 @@ import org.springframework.security.oauth2.core.OAuth2Error;
 import org.springframework.security.oauth2.core.endpoint.OAuth2AccessTokenResponse;
 import org.springframework.security.oauth2.core.http.converter.OAuth2AccessTokenResponseHttpMessageConverter;
 import org.springframework.util.Assert;
-import org.springframework.util.CollectionUtils;
 import org.springframework.web.client.ResponseErrorHandler;
 import org.springframework.web.client.RestClientException;
 import org.springframework.web.client.RestOperations;
@@ -76,19 +75,12 @@ public final class DefaultClientCredentialsTokenResponseClient
 		Assert.notNull(clientCredentialsGrantRequest, "clientCredentialsGrantRequest cannot be null");
 		RequestEntity<?> request = this.requestEntityConverter.convert(clientCredentialsGrantRequest);
 		ResponseEntity<OAuth2AccessTokenResponse> response = getResponse(request);
-		OAuth2AccessTokenResponse tokenResponse = response.getBody();
-		if (CollectionUtils.isEmpty(tokenResponse.getAccessToken().getScopes())) {
-			// As per spec, in Section 5.1 Successful Access Token Response
-			// https://tools.ietf.org/html/rfc6749#section-5.1
-			// If AccessTokenResponse.scope is empty, then default to the scope
-			// originally requested by the client in the Token Request
-			// @formatter:off
-			tokenResponse = OAuth2AccessTokenResponse.withResponse(tokenResponse)
-					.scopes(clientCredentialsGrantRequest.getClientRegistration().getScopes())
-					.build();
-			// @formatter:on
-		}
-		return tokenResponse;
+		// As per spec, in Section 5.1 Successful Access Token Response
+		// https://tools.ietf.org/html/rfc6749#section-5.1
+		// If AccessTokenResponse.scope is empty, then we assume all requested scopes were
+		// granted.
+		// However, we use the explicit scopes returned in the response (if any).
+		return response.getBody();
 	}
 
 	private ResponseEntity<OAuth2AccessTokenResponse> getResponse(RequestEntity<?> request) {

oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/endpoint/DefaultJwtBearerTokenResponseClient.java

@@ -30,7 +30,6 @@ import org.springframework.security.oauth2.core.OAuth2Error;
 import org.springframework.security.oauth2.core.endpoint.OAuth2AccessTokenResponse;
 import org.springframework.security.oauth2.core.http.converter.OAuth2AccessTokenResponseHttpMessageConverter;
 import org.springframework.util.Assert;
-import org.springframework.util.CollectionUtils;
 import org.springframework.web.client.ResponseErrorHandler;
 import org.springframework.web.client.RestClientException;
 import org.springframework.web.client.RestOperations;
@@ -73,19 +72,12 @@ public final class DefaultJwtBearerTokenResponseClient
 		Assert.notNull(jwtBearerGrantRequest, "jwtBearerGrantRequest cannot be null");
 		RequestEntity<?> request = this.requestEntityConverter.convert(jwtBearerGrantRequest);
 		ResponseEntity<OAuth2AccessTokenResponse> response = getResponse(request);
-		OAuth2AccessTokenResponse tokenResponse = response.getBody();
-		if (CollectionUtils.isEmpty(tokenResponse.getAccessToken().getScopes())) {
-			// As per spec, in Section 5.1 Successful Access Token Response
-			// https://tools.ietf.org/html/rfc6749#section-5.1
-			// If AccessTokenResponse.scope is empty, then default to the scope
-			// originally requested by the client in the Token Request
-			// @formatter:off
-			tokenResponse = OAuth2AccessTokenResponse.withResponse(tokenResponse)
-					.scopes(jwtBearerGrantRequest.getClientRegistration().getScopes())
-					.build();
-			// @formatter:on
-		}
-		return tokenResponse;
+		// As per spec, in Section 5.1 Successful Access Token Response
+		// https://tools.ietf.org/html/rfc6749#section-5.1
+		// If AccessTokenResponse.scope is empty, then we assume all requested scopes were
+		// granted.
+		// However, we use the explicit scopes returned in the response (if any).
+		return response.getBody();
 	}
 
 	private ResponseEntity<OAuth2AccessTokenResponse> getResponse(RequestEntity<?> request) {

oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/endpoint/DefaultPasswordTokenResponseClient.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -30,7 +30,6 @@ import org.springframework.security.oauth2.core.OAuth2Error;
 import org.springframework.security.oauth2.core.endpoint.OAuth2AccessTokenResponse;
 import org.springframework.security.oauth2.core.http.converter.OAuth2AccessTokenResponseHttpMessageConverter;
 import org.springframework.util.Assert;
-import org.springframework.util.CollectionUtils;
 import org.springframework.web.client.ResponseErrorHandler;
 import org.springframework.web.client.RestClientException;
 import org.springframework.web.client.RestOperations;
@@ -75,16 +74,12 @@ public final class DefaultPasswordTokenResponseClient
 		Assert.notNull(passwordGrantRequest, "passwordGrantRequest cannot be null");
 		RequestEntity<?> request = this.requestEntityConverter.convert(passwordGrantRequest);
 		ResponseEntity<OAuth2AccessTokenResponse> response = getResponse(request);
-		OAuth2AccessTokenResponse tokenResponse = response.getBody();
-		if (CollectionUtils.isEmpty(tokenResponse.getAccessToken().getScopes())) {
-			// As per spec, in Section 5.1 Successful Access Token Response
-			// https://tools.ietf.org/html/rfc6749#section-5.1
-			// If AccessTokenResponse.scope is empty, then default to the scope
-			// originally requested by the client in the Token Request
-			tokenResponse = OAuth2AccessTokenResponse.withResponse(tokenResponse)
-					.scopes(passwordGrantRequest.getClientRegistration().getScopes()).build();
-		}
-		return tokenResponse;
+		// As per spec, in Section 5.1 Successful Access Token Response
+		// https://tools.ietf.org/html/rfc6749#section-5.1
+		// If AccessTokenResponse.scope is empty, then we assume all requested scopes were
+		// granted.
+		// However, we use the explicit scopes returned in the response (if any).
+		return response.getBody();
 	}
 
 	private ResponseEntity<OAuth2AccessTokenResponse> getResponse(RequestEntity<?> request) {

oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/endpoint/WebClientReactiveAuthorizationCodeTokenResponseClient.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -65,11 +65,6 @@ public class WebClientReactiveAuthorizationCodeTokenResponseClient
 		return Collections.emptySet();
 	}
 
-	@Override
-	Set<String> defaultScopes(OAuth2AuthorizationCodeGrantRequest grantRequest) {
-		return grantRequest.getAuthorizationExchange().getAuthorizationRequest().getScopes();
-	}
-
 	@Override
 	BodyInserters.FormInserter<String> populateTokenRequestBody(OAuth2AuthorizationCodeGrantRequest grantRequest,
 			BodyInserters.FormInserter<String> body) {

oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/endpoint/WebClientReactiveClientCredentialsTokenResponseClient.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/endpoint/WebClientReactivePasswordTokenResponseClient.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

oauth2/oauth2-client/src/test/java/org/springframework/security/oauth2/client/endpoint/DefaultAuthorizationCodeTokenResponseClientTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -295,7 +295,7 @@ public class DefaultAuthorizationCodeTokenResponseClientTests {
 	}
 
 	@Test
-	public void getTokenResponseWhenSuccessResponseDoesNotIncludeScopeThenAccessTokenHasDefaultScope() {
+	public void getTokenResponseWhenSuccessResponseDoesNotIncludeScopeThenAccessTokenHasNoScope() {
 		// @formatter:off
 		String accessTokenSuccessResponse = "{\n"
 			+ "   \"access_token\": \"access-token-1234\",\n"
@@ -307,7 +307,7 @@ public class DefaultAuthorizationCodeTokenResponseClientTests {
 		this.server.enqueue(jsonResponse(accessTokenSuccessResponse));
 		OAuth2AccessTokenResponse accessTokenResponse = this.tokenResponseClient
 				.getTokenResponse(authorizationCodeGrantRequest(this.clientRegistration.build()));
-		assertThat(accessTokenResponse.getAccessToken().getScopes()).containsExactly("read", "write");
+		assertThat(accessTokenResponse.getAccessToken().getScopes()).isEmpty();
 	}
 
 	@Test

oauth2/oauth2-client/src/test/java/org/springframework/security/oauth2/client/endpoint/DefaultClientCredentialsTokenResponseClientTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -304,7 +304,7 @@ public class DefaultClientCredentialsTokenResponseClientTests {
 	}
 
 	@Test
-	public void getTokenResponseWhenSuccessResponseDoesNotIncludeScopeThenAccessTokenHasDefaultScope() {
+	public void getTokenResponseWhenSuccessResponseDoesNotIncludeScopeThenAccessTokenHasNoScope() {
 		// @formatter:off
 		String accessTokenSuccessResponse = "{\n"
 			+ "   \"access_token\": \"access-token-1234\",\n"
@@ -317,7 +317,7 @@ public class DefaultClientCredentialsTokenResponseClientTests {
 				this.clientRegistration.build());
 		OAuth2AccessTokenResponse accessTokenResponse = this.tokenResponseClient
 				.getTokenResponse(clientCredentialsGrantRequest);
-		assertThat(accessTokenResponse.getAccessToken().getScopes()).containsExactly("read", "write");
+		assertThat(accessTokenResponse.getAccessToken().getScopes()).isEmpty();
 	}
 
 	@Test

oauth2/oauth2-client/src/test/java/org/springframework/security/oauth2/client/endpoint/DefaultJwtBearerTokenResponseClientTests.java

@@ -102,7 +102,8 @@ public class DefaultJwtBearerTokenResponseClientTests {
 		String accessTokenSuccessResponse = "{\n"
 				+ "   \"access_token\": \"access-token-1234\",\n"
 				+ "   \"token_type\": \"bearer\",\n"
-				+ "   \"expires_in\": \"3600\"\n"
+				+ "   \"expires_in\": \"3600\",\n"
+				+ "   \"scope\": \"read write\"\n"
 				+ "}\n";
 		// @formatter:on
 		this.server.enqueue(jsonResponse(accessTokenSuccessResponse));
@@ -204,7 +205,7 @@ public class DefaultJwtBearerTokenResponseClientTests {
 	}
 
 	@Test
-	public void getTokenResponseWhenSuccessResponseDoesNotIncludeScopeThenAccessTokenHasDefaultScope() {
+	public void getTokenResponseWhenSuccessResponseDoesNotIncludeScopeThenAccessTokenHasNoScope() {
 		// @formatter:off
 		String accessTokenSuccessResponse = "{\n"
 				+ "   \"access_token\": \"access-token-1234\",\n"
@@ -217,7 +218,7 @@ public class DefaultJwtBearerTokenResponseClientTests {
 				this.jwtAssertion);
 		OAuth2AccessTokenResponse accessTokenResponse = this.tokenResponseClient
 				.getTokenResponse(jwtBearerGrantRequest);
-		assertThat(accessTokenResponse.getAccessToken().getScopes()).containsExactly("read", "write");
+		assertThat(accessTokenResponse.getAccessToken().getScopes()).isEmpty();
 	}
 
 	@Test

oauth2/oauth2-client/src/test/java/org/springframework/security/oauth2/client/endpoint/DefaultPasswordTokenResponseClientTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -102,7 +102,8 @@ public class DefaultPasswordTokenResponseClientTests {
 		String accessTokenSuccessResponse = "{\n"
 			+ "   \"access_token\": \"access-token-1234\",\n"
 			+ "   \"token_type\": \"bearer\",\n"
-			+ "   \"expires_in\": \"3600\"\n"
+			+ "   \"expires_in\": \"3600\",\n"
+			+ "   \"scope\": \"read write\"\n"
 			+ "}\n";
 		// @formatter:on
 		this.server.enqueue(jsonResponse(accessTokenSuccessResponse));
@@ -136,7 +137,8 @@ public class DefaultPasswordTokenResponseClientTests {
 		String accessTokenSuccessResponse = "{\n"
 			+ "   \"access_token\": \"access-token-1234\",\n"
 			+ "   \"token_type\": \"bearer\",\n"
-			+ "   \"expires_in\": \"3600\"\n"
+			+ "   \"expires_in\": \"3600\",\n"
+			+ "   \"scope\": \"read\"\n"
 			+ "}\n";
 		// @formatter:on
 		this.server.enqueue(jsonResponse(accessTokenSuccessResponse));
@@ -268,6 +270,22 @@ public class DefaultPasswordTokenResponseClientTests {
 		assertThat(accessTokenResponse.getAccessToken().getScopes()).containsExactly("read");
 	}
 
+	@Test
+	public void getTokenResponseWhenSuccessResponseDoesNotIncludeScopeThenAccessTokenHasNoScope() {
+		// @formatter:off
+		String accessTokenSuccessResponse = "{\n"
+			+ "   \"access_token\": \"access-token-1234\",\n"
+			+ "   \"token_type\": \"bearer\",\n"
+			+ "   \"expires_in\": \"3600\"\n"
+			+ "}\n";
+		// @formatter:on
+		this.server.enqueue(jsonResponse(accessTokenSuccessResponse));
+		OAuth2PasswordGrantRequest passwordGrantRequest = new OAuth2PasswordGrantRequest(
+				this.clientRegistration.build(), this.username, this.password);
+		OAuth2AccessTokenResponse accessTokenResponse = this.tokenResponseClient.getTokenResponse(passwordGrantRequest);
+		assertThat(accessTokenResponse.getAccessToken().getScopes()).isEmpty();
+	}
+
 	@Test
 	public void getTokenResponseWhenErrorResponseThenThrowOAuth2AuthorizationException() {
 		String accessTokenErrorResponse = "{\n" + "   \"error\": \"unauthorized_client\"\n" + "}\n";

oauth2/oauth2-client/src/test/java/org/springframework/security/oauth2/client/endpoint/DefaultRefreshTokenTokenResponseClientTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -104,7 +104,8 @@ public class DefaultRefreshTokenTokenResponseClientTests {
 		String accessTokenSuccessResponse = "{\n"
 			+ "   \"access_token\": \"access-token-1234\",\n"
 			+ "   \"token_type\": \"bearer\",\n"
-			+ "   \"expires_in\": \"3600\"\n"
+			+ "   \"expires_in\": \"3600\",\n"
+			+ "   \"scope\": \"read write\"\n"
 			+ "}\n";
 		// @formatter:on
 		this.server.enqueue(jsonResponse(accessTokenSuccessResponse));
@@ -131,6 +132,26 @@ public class DefaultRefreshTokenTokenResponseClientTests {
 		assertThat(accessTokenResponse.getRefreshToken().getTokenValue()).isEqualTo(this.refreshToken.getTokenValue());
 	}
 
+	@Test
+	public void getTokenResponseWhenSuccessResponseDoesNotIncludeScopeThenAccessTokenHasOriginalScope() {
+		// @formatter:off
+		String accessTokenSuccessResponse = "{\n"
+				+ "   \"access_token\": \"access-token-1234\",\n"
+				+ "   \"token_type\": \"bearer\",\n"
+				+ "   \"expires_in\": \"3600\"\n"
+				+ "}\n";
+		// @formatter:on
+		this.server.enqueue(jsonResponse(accessTokenSuccessResponse));
+		ClientRegistration clientRegistration = this.clientRegistration
+				.clientAuthenticationMethod(ClientAuthenticationMethod.CLIENT_SECRET_POST).build();
+		OAuth2RefreshTokenGrantRequest refreshTokenGrantRequest = new OAuth2RefreshTokenGrantRequest(clientRegistration,
+				this.accessToken, this.refreshToken);
+		OAuth2AccessTokenResponse accessTokenResponse = this.tokenResponseClient
+				.getTokenResponse(refreshTokenGrantRequest);
+		assertThat(accessTokenResponse.getAccessToken().getScopes())
+				.containsExactly(this.accessToken.getScopes().toArray(new String[0]));
+	}
+
 	@Test
 	public void getTokenResponseWhenAuthenticationClientSecretPostThenFormParametersAreSent() throws Exception {
 		// @formatter:off

oauth2/oauth2-client/src/test/java/org/springframework/security/oauth2/client/endpoint/WebClientReactiveAuthorizationCodeTokenResponseClientTests.java

@@ -246,7 +246,7 @@ public class WebClientReactiveAuthorizationCodeTokenResponseClientTests {
 	}
 
 	@Test
-	public void getTokenResponseWhenSuccessResponseDoesNotIncludeScopeThenReturnAccessTokenResponseUsingRequestedScope() {
+	public void getTokenResponseWhenSuccessResponseDoesNotIncludeScopeThenReturnAccessTokenResponseWithNoScopes() {
 		// @formatter:off
 		String accessTokenSuccessResponse = "{\n"
 			+ "   \"access_token\": \"access-token-1234\",\n"
@@ -258,8 +258,7 @@ public class WebClientReactiveAuthorizationCodeTokenResponseClientTests {
 		this.clientRegistration.scope("openid", "profile", "email", "address");
 		OAuth2AccessTokenResponse accessTokenResponse = this.tokenResponseClient
 				.getTokenResponse(authorizationCodeGrantRequest()).block();
-		assertThat(accessTokenResponse.getAccessToken().getScopes()).containsExactly("openid", "profile", "email",
-				"address");
+		assertThat(accessTokenResponse.getAccessToken().getScopes()).isEmpty();
 	}
 
 	private OAuth2AuthorizationCodeGrantRequest authorizationCodeGrantRequest() {

oauth2/oauth2-client/src/test/java/org/springframework/security/oauth2/client/endpoint/WebClientReactiveClientCredentialsTokenResponseClientTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -103,6 +103,7 @@ public class WebClientReactiveClientCredentialsTokenResponseClientTests {
 		RecordedRequest actualRequest = this.server.takeRequest();
 		String body = actualRequest.getUtf8Body();
 		assertThat(response.getAccessToken()).isNotNull();
+		assertThat(response.getAccessToken().getScopes()).containsExactly("create");
 		assertThat(actualRequest.getHeader(HttpHeaders.AUTHORIZATION))
 				.isEqualTo("Basic Y2xpZW50LWlkOmNsaWVudC1zZWNyZXQ=");
 		assertThat(body).isEqualTo("grant_type=client_credentials&scope=read%3Auser");
@@ -128,6 +129,7 @@ public class WebClientReactiveClientCredentialsTokenResponseClientTests {
 		RecordedRequest actualRequest = this.server.takeRequest();
 		String body = actualRequest.getBody().readUtf8();
 		assertThat(response.getAccessToken()).isNotNull();
+		assertThat(response.getAccessToken().getScopes()).containsExactly("create");
 		String urlEncodedClientCredentialecret = URLEncoder.encode(clientCredentialWithAnsiKeyboardSpecialCharacters,
 				StandardCharsets.UTF_8.toString());
 		String clientCredentials = Base64.getEncoder()
@@ -155,6 +157,7 @@ public class WebClientReactiveClientCredentialsTokenResponseClientTests {
 		RecordedRequest actualRequest = this.server.takeRequest();
 		String body = actualRequest.getUtf8Body();
 		assertThat(response.getAccessToken()).isNotNull();
+		assertThat(response.getAccessToken().getScopes()).containsExactly("create");
 		assertThat(actualRequest.getHeader(HttpHeaders.AUTHORIZATION)).isNull();
 		assertThat(body).isEqualTo(
 				"grant_type=client_credentials&client_id=client-id&client_secret=client-secret&scope=read%3Auser");
@@ -230,7 +233,7 @@ public class WebClientReactiveClientCredentialsTokenResponseClientTests {
 	}
 
 	@Test
-	public void getTokenResponseWhenNoScopeThenClientRegistrationScopesDefaulted() {
+	public void getTokenResponseWhenNoScopeThenReturnAccessTokenResponseWithNoScopes() {
 		ClientRegistration registration = this.clientRegistration.build();
 		// @formatter:off
 		enqueueJson("{\n"
@@ -242,7 +245,7 @@ public class WebClientReactiveClientCredentialsTokenResponseClientTests {
 		// @formatter:on
 		OAuth2ClientCredentialsGrantRequest request = new OAuth2ClientCredentialsGrantRequest(registration);
 		OAuth2AccessTokenResponse response = this.client.getTokenResponse(request).block();
-		assertThat(response.getAccessToken().getScopes()).isEqualTo(registration.getScopes());
+		assertThat(response.getAccessToken().getScopes()).isEmpty();
 	}
 
 	@Test

oauth2/oauth2-client/src/test/java/org/springframework/security/oauth2/client/endpoint/WebClientReactiveJwtBearerTokenResponseClientTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -293,9 +293,17 @@ public class WebClientReactiveJwtBearerTokenResponseClientTests {
 
 	@Test
 	public void getTokenResponseWhenClientSecretBasicThenSuccess() throws Exception {
+		// @formatter:off
+		String accessTokenResponse = "{\n"
+				+ "  \"access_token\": \"access-token-1234\",\n"
+				+ "  \"token_type\": \"bearer\",\n"
+				+ "  \"expires_in\": 3600,\n"
+				+ "  \"scope\": \"read write\""
+				+ "}\n";
+		// @formatter:on
 		ClientRegistration clientRegistration = this.clientRegistration.build();
 		JwtBearerGrantRequest request = new JwtBearerGrantRequest(clientRegistration, this.jwtAssertion);
-		enqueueJson(DEFAULT_ACCESS_TOKEN_RESPONSE);
+		enqueueJson(accessTokenResponse);
 		OAuth2AccessTokenResponse response = this.client.getTokenResponse(request).block();
 		assertThat(response).isNotNull();
 		assertThat(response.getAccessToken().getScopes()).containsExactly("read", "write");
@@ -309,12 +317,18 @@ public class WebClientReactiveJwtBearerTokenResponseClientTests {
 	@Test
 	public void getTokenResponseWhenClientSecretPostThenSuccess() throws Exception {
 		// @formatter:off
+		String accessTokenResponse = "{\n"
+				+ "  \"access_token\": \"access-token-1234\",\n"
+				+ "  \"token_type\": \"bearer\",\n"
+				+ "  \"expires_in\": 3600,\n"
+				+ "  \"scope\": \"read write\""
+				+ "}\n";
 		ClientRegistration clientRegistration = this.clientRegistration
 				.clientAuthenticationMethod(ClientAuthenticationMethod.CLIENT_SECRET_POST)
 				.build();
 		// @formatter:on
 		JwtBearerGrantRequest request = new JwtBearerGrantRequest(clientRegistration, this.jwtAssertion);
-		enqueueJson(DEFAULT_ACCESS_TOKEN_RESPONSE);
+		enqueueJson(accessTokenResponse);
 		OAuth2AccessTokenResponse response = this.client.getTokenResponse(request).block();
 		assertThat(response).isNotNull();
 		assertThat(response.getAccessToken().getScopes()).containsExactly("read", "write");
@@ -333,6 +347,7 @@ public class WebClientReactiveJwtBearerTokenResponseClientTests {
 				+ "  \"expires_in\": 3600,\n"
 				+ "  \"scope\": \"read\"\n"
 				+ "}\n";
+		// @formatter:on
 		ClientRegistration clientRegistration = this.clientRegistration.build();
 		JwtBearerGrantRequest request = new JwtBearerGrantRequest(clientRegistration, this.jwtAssertion);
 		enqueueJson(accessTokenResponse);
@@ -341,6 +356,17 @@ public class WebClientReactiveJwtBearerTokenResponseClientTests {
 		assertThat(response.getAccessToken().getScopes()).containsExactly("read");
 	}
 
+	@Test
+	public void getTokenResponseWhenResponseDoesNotIncludeScopeThenReturnAccessTokenResponseWithNoScopes()
+			throws Exception {
+		ClientRegistration clientRegistration = this.clientRegistration.build();
+		JwtBearerGrantRequest request = new JwtBearerGrantRequest(clientRegistration, this.jwtAssertion);
+		enqueueJson(DEFAULT_ACCESS_TOKEN_RESPONSE);
+		OAuth2AccessTokenResponse response = this.client.getTokenResponse(request).block();
+		assertThat(response).isNotNull();
+		assertThat(response.getAccessToken().getScopes()).isEmpty();
+	}
+
 	private void enqueueJson(String body) {
 		MockResponse response = new MockResponse().setBody(body).setHeader(HttpHeaders.CONTENT_TYPE,
 				MediaType.APPLICATION_JSON_VALUE);

oauth2/oauth2-client/src/test/java/org/springframework/security/oauth2/client/endpoint/WebClientReactivePasswordTokenResponseClientTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -99,7 +99,8 @@ public class WebClientReactivePasswordTokenResponseClientTests {
 	}
 
 	@Test
-	public void getTokenResponseWhenSuccessResponseThenReturnAccessTokenResponse() throws Exception {
+	public void getTokenResponseWhenSuccessResponseDoesNotIncludeScopeThenReturnAccessTokenResponseWithNoScope()
+			throws Exception {
 		// @formatter:off
 		String accessTokenSuccessResponse = "{\n"
 			+ "   \"access_token\": \"access-token-1234\",\n"
@@ -128,6 +129,41 @@ public class WebClientReactivePasswordTokenResponseClientTests {
 		assertThat(accessTokenResponse.getAccessToken().getTokenValue()).isEqualTo("access-token-1234");
 		assertThat(accessTokenResponse.getAccessToken().getTokenType()).isEqualTo(OAuth2AccessToken.TokenType.BEARER);
 		assertThat(accessTokenResponse.getAccessToken().getExpiresAt()).isBetween(expiresAtBefore, expiresAtAfter);
+		assertThat(accessTokenResponse.getAccessToken().getScopes()).isEmpty();
+		assertThat(accessTokenResponse.getRefreshToken()).isNull();
+	}
+
+	@Test
+	public void getTokenResponseWhenSuccessResponseIncludesScopeThenReturnAccessTokenResponse() throws Exception {
+		// @formatter:off
+		String accessTokenSuccessResponse = "{\n"
+			+ "   \"access_token\": \"access-token-1234\",\n"
+			+ "   \"token_type\": \"bearer\",\n"
+			+ "   \"expires_in\": \"3600\",\n"
+			+ "   \"scope\": \"read write\"\n"
+			+ "}\n";
+		// @formatter:on
+		this.server.enqueue(jsonResponse(accessTokenSuccessResponse));
+		Instant expiresAtBefore = Instant.now().plusSeconds(3600);
+		ClientRegistration clientRegistration = this.clientRegistrationBuilder.build();
+		OAuth2PasswordGrantRequest passwordGrantRequest = new OAuth2PasswordGrantRequest(clientRegistration,
+				this.username, this.password);
+		OAuth2AccessTokenResponse accessTokenResponse = this.tokenResponseClient.getTokenResponse(passwordGrantRequest)
+				.block();
+		Instant expiresAtAfter = Instant.now().plusSeconds(3600);
+		RecordedRequest recordedRequest = this.server.takeRequest();
+		assertThat(recordedRequest.getMethod()).isEqualTo(HttpMethod.POST.toString());
+		assertThat(recordedRequest.getHeader(HttpHeaders.ACCEPT)).isEqualTo(MediaType.APPLICATION_JSON_VALUE);
+		assertThat(recordedRequest.getHeader(HttpHeaders.CONTENT_TYPE))
+				.isEqualTo(MediaType.APPLICATION_FORM_URLENCODED_VALUE + ";charset=UTF-8");
+		String formParameters = recordedRequest.getBody().readUtf8();
+		assertThat(formParameters).contains("grant_type=password");
+		assertThat(formParameters).contains("username=user1");
+		assertThat(formParameters).contains("password=password");
+		assertThat(formParameters).contains("scope=read+write");
+		assertThat(accessTokenResponse.getAccessToken().getTokenValue()).isEqualTo("access-token-1234");
+		assertThat(accessTokenResponse.getAccessToken().getTokenType()).isEqualTo(OAuth2AccessToken.TokenType.BEARER);
+		assertThat(accessTokenResponse.getAccessToken().getExpiresAt()).isBetween(expiresAtBefore, expiresAtAfter);
 		assertThat(accessTokenResponse.getAccessToken().getScopes())
 				.containsExactly(clientRegistration.getScopes().toArray(new String[0]));
 		assertThat(accessTokenResponse.getRefreshToken()).isNull();

web/src/main/java/org/springframework/security/web/access/intercept/AuthorizationFilter.java

@@ -19,8 +19,11 @@ package org.springframework.security.web.access.intercept;
 import java.io.IOException;
 import java.util.function.Supplier;
 
+import javax.servlet.DispatcherType;
 import javax.servlet.FilterChain;
 import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
@@ -35,7 +38,7 @@ import org.springframework.security.authorization.event.AuthorizationGrantedEven
 import org.springframework.security.core.Authentication;
 import org.springframework.security.core.context.SecurityContextHolder;
 import org.springframework.util.Assert;
-import org.springframework.web.filter.OncePerRequestFilter;
+import org.springframework.web.filter.GenericFilterBean;
 
 /**
  * An authorization filter that restricts access to the URL using
@@ -44,13 +47,17 @@ import org.springframework.web.filter.OncePerRequestFilter;
  * @author Evgeniy Cheban
  * @since 5.5
  */
-public class AuthorizationFilter extends OncePerRequestFilter {
+public class AuthorizationFilter extends GenericFilterBean {
 
 	private final AuthorizationManager<HttpServletRequest> authorizationManager;
 
 	private AuthorizationEventPublisher eventPublisher = AuthorizationFilter::noPublish;
 
-	private boolean shouldFilterAllDispatcherTypes = false;
+	private boolean observeOncePerRequest = true;
+
+	private boolean filterErrorDispatch = false;
+
+	private boolean filterAsyncDispatch = false;
 
 	/**
 	 * Creates an instance.
@@ -62,40 +69,66 @@ public class AuthorizationFilter extends OncePerRequestFilter {
 	}
 
 	@Override
-	protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
+	public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain chain)
 			throws ServletException, IOException {
 
-		AuthorizationDecision decision = this.authorizationManager.check(this::getAuthentication, request);
-		this.eventPublisher.publishAuthorizationEvent(this::getAuthentication, request, decision);
-		if (decision != null && !decision.isGranted()) {
-			throw new AccessDeniedException("Access Denied");
+		HttpServletRequest request = (HttpServletRequest) servletRequest;
+		HttpServletResponse response = (HttpServletResponse) servletResponse;
+
+		if (this.observeOncePerRequest && isApplied(request)) {
+			chain.doFilter(request, response);
+			return;
+		}
+
+		if (skipDispatch(request)) {
+			chain.doFilter(request, response);
+			return;
+		}
+
+		String alreadyFilteredAttributeName = getAlreadyFilteredAttributeName();
+		request.setAttribute(alreadyFilteredAttributeName, Boolean.TRUE);
+		try {
+			AuthorizationDecision decision = this.authorizationManager.check(this::getAuthentication, request);
+			this.eventPublisher.publishAuthorizationEvent(this::getAuthentication, request, decision);
+			if (decision != null && !decision.isGranted()) {
+				throw new AccessDeniedException("Access Denied");
+			}
+			chain.doFilter(request, response);
+		}
+		finally {
+			request.removeAttribute(alreadyFilteredAttributeName);
 		}
-		filterChain.doFilter(request, response);
 	}
 
-	private Authentication getAuthentication() {
-		Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
-		if (authentication == null) {
-			throw new AuthenticationCredentialsNotFoundException(
-					"An Authentication object was not found in the SecurityContext");
+	private boolean skipDispatch(HttpServletRequest request) {
+		if (DispatcherType.ERROR.equals(request.getDispatcherType()) && !this.filterErrorDispatch) {
+			return true;
 		}
-		return authentication;
+		if (DispatcherType.ASYNC.equals(request.getDispatcherType()) && !this.filterAsyncDispatch) {
+			return true;
+		}
+		return false;
 	}
 
-	@Override
-	protected void doFilterNestedErrorDispatch(HttpServletRequest request, HttpServletResponse response,
-			FilterChain filterChain) throws ServletException, IOException {
-		doFilterInternal(request, response, filterChain);
+	private boolean isApplied(HttpServletRequest request) {
+		return request.getAttribute(getAlreadyFilteredAttributeName()) != null;
 	}
 
-	@Override
-	protected boolean shouldNotFilterAsyncDispatch() {
-		return !this.shouldFilterAllDispatcherTypes;
+	private String getAlreadyFilteredAttributeName() {
+		String name = getFilterName();
+		if (name == null) {
+			name = getClass().getName();
+		}
+		return name + ".APPLIED";
 	}
 
-	@Override
-	protected boolean shouldNotFilterErrorDispatch() {
-		return !this.shouldFilterAllDispatcherTypes;
+	private Authentication getAuthentication() {
+		Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
+		if (authentication == null) {
+			throw new AuthenticationCredentialsNotFoundException(
+					"An Authentication object was not found in the SecurityContext");
+		}
+		return authentication;
 	}
 
 	/**
@@ -124,7 +157,9 @@ public class AuthorizationFilter extends OncePerRequestFilter {
 	 * @since 5.7
 	 */
 	public void setShouldFilterAllDispatcherTypes(boolean shouldFilterAllDispatcherTypes) {
-		this.shouldFilterAllDispatcherTypes = shouldFilterAllDispatcherTypes;
+		this.observeOncePerRequest = !shouldFilterAllDispatcherTypes;
+		this.filterErrorDispatch = shouldFilterAllDispatcherTypes;
+		this.filterAsyncDispatch = shouldFilterAllDispatcherTypes;
 	}
 
 	private static <T> void noPublish(Supplier<Authentication> authentication, T object,
@@ -132,4 +167,38 @@ public class AuthorizationFilter extends OncePerRequestFilter {
 
 	}
 
+	public boolean isObserveOncePerRequest() {
+		return this.observeOncePerRequest;
+	}
+
+	/**
+	 * Sets whether this filter apply only once per request. By default, this is
+	 * <code>true</code>, meaning the filter will only execute once per request. Sometimes
+	 * users may wish it to execute more than once per request, such as when JSP forwards
+	 * are being used and filter security is desired on each included fragment of the HTTP
+	 * request.
+	 * @param observeOncePerRequest whether the filter should only be applied once per
+	 * request
+	 */
+	public void setObserveOncePerRequest(boolean observeOncePerRequest) {
+		this.observeOncePerRequest = observeOncePerRequest;
+	}
+
+	/**
+	 * If set to true, the filter will be applied to error dispatcher. Defaults to false.
+	 * @param filterErrorDispatch whether the filter should be applied to error dispatcher
+	 */
+	public void setFilterErrorDispatch(boolean filterErrorDispatch) {
+		this.filterErrorDispatch = filterErrorDispatch;
+	}
+
+	/**
+	 * If set to true, the filter will be applied to the async dispatcher. Defaults to
+	 * false.
+	 * @param filterAsyncDispatch whether the filter should be applied to async dispatch
+	 */
+	public void setFilterAsyncDispatch(boolean filterAsyncDispatch) {
+		this.filterAsyncDispatch = filterAsyncDispatch;
+	}
+
 }

web/src/test/java/org/springframework/security/web/access/intercept/AuthorizationFilterTests.java

@@ -16,16 +16,20 @@
 
 package org.springframework.security.web.access.intercept;
 
+import java.io.IOException;
 import java.util.function.Supplier;
 
 import javax.servlet.DispatcherType;
 import javax.servlet.FilterChain;
+import javax.servlet.ServletException;
 import javax.servlet.http.HttpServletRequest;
 
 import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.mockito.ArgumentCaptor;
 
+import org.springframework.mock.web.MockFilterChain;
 import org.springframework.mock.web.MockHttpServletRequest;
 import org.springframework.mock.web.MockHttpServletResponse;
 import org.springframework.security.access.AccessDeniedException;
@@ -39,6 +43,7 @@ import org.springframework.security.core.Authentication;
 import org.springframework.security.core.context.SecurityContext;
 import org.springframework.security.core.context.SecurityContextHolder;
 import org.springframework.security.core.context.SecurityContextImpl;
+import org.springframework.test.util.ReflectionTestUtils;
 import org.springframework.web.util.WebUtils;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -49,6 +54,7 @@ import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.BDDMockito.given;
 import static org.mockito.BDDMockito.willThrow;
 import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.verifyNoInteractions;
 
@@ -59,6 +65,24 @@ import static org.mockito.Mockito.verifyNoInteractions;
  */
 public class AuthorizationFilterTests {
 
+	private static final String ALREADY_FILTERED_ATTRIBUTE_NAME = "org.springframework.security.web.access.intercept.AuthorizationFilter.APPLIED";
+
+	private AuthorizationFilter filter;
+
+	private AuthorizationManager<HttpServletRequest> authorizationManager;
+
+	private MockHttpServletRequest request = new MockHttpServletRequest();
+
+	private final MockHttpServletResponse response = new MockHttpServletResponse();
+
+	private final FilterChain chain = new MockFilterChain();
+
+	@BeforeEach
+	public void setup() {
+		this.authorizationManager = mock(AuthorizationManager.class);
+		this.filter = new AuthorizationFilter(this.authorizationManager);
+	}
+
 	@AfterEach
 	public void tearDown() {
 		SecurityContextHolder.clearContext();
@@ -197,37 +221,101 @@ public class AuthorizationFilterTests {
 	}
 
 	@Test
-	public void doFilterNestedErrorDispatchWhenAuthorizationManagerThenUses() throws Exception {
-		AuthorizationManager<HttpServletRequest> authorizationManager = mock(AuthorizationManager.class);
-		AuthorizationFilter authorizationFilter = new AuthorizationFilter(authorizationManager);
-		authorizationFilter.setShouldFilterAllDispatcherTypes(true);
-		MockHttpServletRequest mockRequest = new MockHttpServletRequest(null, "/path");
-		mockRequest.setDispatcherType(DispatcherType.ERROR);
-		mockRequest.setAttribute(WebUtils.ERROR_REQUEST_URI_ATTRIBUTE, "/error");
-		MockHttpServletResponse mockResponse = new MockHttpServletResponse();
-		FilterChain mockFilterChain = mock(FilterChain.class);
+	public void doFilterWhenObserveOncePerRequestTrueAndIsAppliedThenNotInvoked() throws ServletException, IOException {
+		setIsAppliedTrue();
+		this.filter.setObserveOncePerRequest(true);
+		this.filter.doFilter(this.request, this.response, this.chain);
+		verifyNoInteractions(this.authorizationManager);
+	}
 
-		authorizationFilter.doFilterNestedErrorDispatch(mockRequest, mockResponse, mockFilterChain);
-		verify(authorizationManager).check(any(Supplier.class), any(HttpServletRequest.class));
+	@Test
+	public void doFilterWhenObserveOncePerRequestTrueAndNotAppliedThenInvoked() throws ServletException, IOException {
+		this.filter.setObserveOncePerRequest(true);
+		this.filter.doFilter(this.request, this.response, this.chain);
+		verify(this.authorizationManager).check(any(), any());
 	}
 
 	@Test
-	public void doFilterNestedErrorDispatchWhenAuthorizationEventPublisherThenUses() throws Exception {
-		AuthorizationFilter authorizationFilter = new AuthorizationFilter(
-				AuthenticatedAuthorizationManager.authenticated());
-		MockHttpServletRequest mockRequest = new MockHttpServletRequest(null, "/path");
-		MockHttpServletResponse mockResponse = new MockHttpServletResponse();
-		FilterChain mockFilterChain = mock(FilterChain.class);
+	public void doFilterWhenObserveOncePerRequestFalseAndIsAppliedThenInvoked() throws ServletException, IOException {
+		setIsAppliedTrue();
+		this.filter.setObserveOncePerRequest(false);
+		this.filter.doFilter(this.request, this.response, this.chain);
+		verify(this.authorizationManager).check(any(), any());
+	}
 
-		SecurityContext securityContext = new SecurityContextImpl();
-		securityContext.setAuthentication(new TestingAuthenticationToken("user", "password", "ROLE_USER"));
-		SecurityContextHolder.setContext(securityContext);
+	@Test
+	public void doFilterWhenObserveOncePerRequestFalseAndNotAppliedThenInvoked() throws ServletException, IOException {
+		this.filter.setObserveOncePerRequest(false);
+		this.filter.doFilter(this.request, this.response, this.chain);
+		verify(this.authorizationManager).check(any(), any());
+	}
 
-		AuthorizationEventPublisher eventPublisher = mock(AuthorizationEventPublisher.class);
-		authorizationFilter.setAuthorizationEventPublisher(eventPublisher);
-		authorizationFilter.doFilterNestedErrorDispatch(mockRequest, mockResponse, mockFilterChain);
-		verify(eventPublisher).publishAuthorizationEvent(any(Supplier.class), any(HttpServletRequest.class),
-				any(AuthorizationDecision.class));
+	@Test
+	public void doFilterWhenFilterErrorDispatchFalseAndIsErrorThenNotInvoked() throws ServletException, IOException {
+		this.request.setDispatcherType(DispatcherType.ERROR);
+		this.filter.setFilterErrorDispatch(false);
+		this.filter.doFilter(this.request, this.response, this.chain);
+		verifyNoInteractions(this.authorizationManager);
+	}
+
+	@Test
+	public void doFilterWhenFilterErrorDispatchTrueAndIsErrorThenInvoked() throws ServletException, IOException {
+		this.request.setDispatcherType(DispatcherType.ERROR);
+		this.filter.setFilterErrorDispatch(true);
+		this.filter.doFilter(this.request, this.response, this.chain);
+		verify(this.authorizationManager).check(any(), any());
+	}
+
+	@Test
+	public void doFilterWhenFilterThenSetAlreadyFilteredAttribute() throws ServletException, IOException {
+		this.request = mock(MockHttpServletRequest.class);
+		this.filter.doFilter(this.request, this.response, this.chain);
+		verify(this.request).setAttribute(ALREADY_FILTERED_ATTRIBUTE_NAME, Boolean.TRUE);
+	}
+
+	@Test
+	public void doFilterWhenFilterThenRemoveAlreadyFilteredAttribute() throws ServletException, IOException {
+		this.request = spy(MockHttpServletRequest.class);
+		this.filter.doFilter(this.request, this.response, this.chain);
+		verify(this.request).setAttribute(ALREADY_FILTERED_ATTRIBUTE_NAME, Boolean.TRUE);
+		assertThat(this.request.getAttribute(ALREADY_FILTERED_ATTRIBUTE_NAME)).isNull();
+	}
+
+	@Test
+	public void doFilterWhenFilterAsyncDispatchTrueAndIsAsyncThenInvoked() throws ServletException, IOException {
+		this.request.setDispatcherType(DispatcherType.ASYNC);
+		this.filter.setFilterAsyncDispatch(true);
+		this.filter.doFilter(this.request, this.response, this.chain);
+		verify(this.authorizationManager).check(any(), any());
+	}
+
+	@Test
+	public void doFilterWhenFilterAsyncDispatchFalseAndIsAsyncThenNotInvoked() throws ServletException, IOException {
+		this.request.setDispatcherType(DispatcherType.ASYNC);
+		this.filter.setFilterAsyncDispatch(false);
+		this.filter.doFilter(this.request, this.response, this.chain);
+		verifyNoInteractions(this.authorizationManager);
+	}
+
+	@Test
+	public void filterWhenFilterErrorDispatchDefaultThenFalse() {
+		Boolean filterErrorDispatch = (Boolean) ReflectionTestUtils.getField(this.filter, "filterErrorDispatch");
+		assertThat(filterErrorDispatch).isFalse();
+	}
+
+	@Test
+	public void filterWhenFilterAsyncDispatchDefaultThenFalse() {
+		Boolean filterAsyncDispatch = (Boolean) ReflectionTestUtils.getField(this.filter, "filterAsyncDispatch");
+		assertThat(filterAsyncDispatch).isFalse();
+	}
+
+	@Test
+	public void filterWhenObserveOncePerRequestDefaultThenTrue() {
+		assertThat(this.filter.isObserveOncePerRequest()).isTrue();
+	}
+
+	private void setIsAppliedTrue() {
+		this.request.setAttribute(ALREADY_FILTERED_ATTRIBUTE_NAME, Boolean.TRUE);
 	}
 
 }