Favor provided instances over shared objects

Prior to this commit, providing oauth2Login() and oauth2Client() with
clientRegistrationRepository() and authorizedClientRepository() caused
objects to be shared across both configurers.

These configurers will now prefer explicitly provided instances of
those objects when they are available.

Closes gh-16105

config/src/main/java/org/springframework/security/config/annotation/web/configurers/oauth2/client/OAuth2ClientConfigurer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2025 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.
@@ -98,6 +98,10 @@ public final class OAuth2ClientConfigurer<B extends HttpSecurityBuilder<B>>
 
 	private AuthorizationCodeGrantConfigurer authorizationCodeGrantConfigurer = new AuthorizationCodeGrantConfigurer();
 
+	private ClientRegistrationRepository clientRegistrationRepository;
+
+	private OAuth2AuthorizedClientRepository authorizedClientRepository;
+
 	/**
 	 * Sets the repository of client registrations.
 	 * @param clientRegistrationRepository the repository of client registrations
@@ -107,6 +111,7 @@ public final class OAuth2ClientConfigurer<B extends HttpSecurityBuilder<B>>
 			ClientRegistrationRepository clientRegistrationRepository) {
 		Assert.notNull(clientRegistrationRepository, "clientRegistrationRepository cannot be null");
 		this.getBuilder().setSharedObject(ClientRegistrationRepository.class, clientRegistrationRepository);
+		this.clientRegistrationRepository = clientRegistrationRepository;
 		return this;
 	}
 
@@ -119,6 +124,7 @@ public final class OAuth2ClientConfigurer<B extends HttpSecurityBuilder<B>>
 			OAuth2AuthorizedClientRepository authorizedClientRepository) {
 		Assert.notNull(authorizedClientRepository, "authorizedClientRepository cannot be null");
 		this.getBuilder().setSharedObject(OAuth2AuthorizedClientRepository.class, authorizedClientRepository);
+		this.authorizedClientRepository = authorizedClientRepository;
 		return this;
 	}
 
@@ -283,8 +289,7 @@ public final class OAuth2ClientConfigurer<B extends HttpSecurityBuilder<B>>
 			if (this.authorizationRequestResolver != null) {
 				return this.authorizationRequestResolver;
 			}
-			ClientRegistrationRepository clientRegistrationRepository = OAuth2ClientConfigurerUtils
-				.getClientRegistrationRepository(getBuilder());
+			ClientRegistrationRepository clientRegistrationRepository = getClientRegistrationRepository(getBuilder());
 			return new DefaultOAuth2AuthorizationRequestResolver(clientRegistrationRepository,
 					OAuth2AuthorizationRequestRedirectFilter.DEFAULT_AUTHORIZATION_REQUEST_BASE_URI);
 		}
@@ -292,8 +297,8 @@ public final class OAuth2ClientConfigurer<B extends HttpSecurityBuilder<B>>
 		private OAuth2AuthorizationCodeGrantFilter createAuthorizationCodeGrantFilter(B builder) {
 			AuthenticationManager authenticationManager = builder.getSharedObject(AuthenticationManager.class);
 			OAuth2AuthorizationCodeGrantFilter authorizationCodeGrantFilter = new OAuth2AuthorizationCodeGrantFilter(
-					OAuth2ClientConfigurerUtils.getClientRegistrationRepository(builder),
-					OAuth2ClientConfigurerUtils.getAuthorizedClientRepository(builder), authenticationManager);
+					getClientRegistrationRepository(builder), getAuthorizedClientRepository(builder),
+					authenticationManager);
 			if (this.authorizationRequestRepository != null) {
 				authorizationCodeGrantFilter.setAuthorizationRequestRepository(this.authorizationRequestRepository);
 			}
@@ -315,6 +320,18 @@ public final class OAuth2ClientConfigurer<B extends HttpSecurityBuilder<B>>
 			return (bean != null) ? bean : new DefaultAuthorizationCodeTokenResponseClient();
 		}
 
+		private ClientRegistrationRepository getClientRegistrationRepository(B builder) {
+			return (OAuth2ClientConfigurer.this.clientRegistrationRepository != null)
+					? OAuth2ClientConfigurer.this.clientRegistrationRepository
+					: OAuth2ClientConfigurerUtils.getClientRegistrationRepository(builder);
+		}
+
+		private OAuth2AuthorizedClientRepository getAuthorizedClientRepository(B builder) {
+			return (OAuth2ClientConfigurer.this.authorizedClientRepository != null)
+					? OAuth2ClientConfigurer.this.authorizedClientRepository
+					: OAuth2ClientConfigurerUtils.getAuthorizedClientRepository(builder);
+		}
+
 		@SuppressWarnings("unchecked")
 		private <T> T getBeanOrNull(ResolvableType type) {
 			ApplicationContext context = getBuilder().getSharedObject(ApplicationContext.class);

config/src/main/java/org/springframework/security/config/annotation/web/configurers/oauth2/client/OAuth2LoginConfigurer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2024 the original author or authors.
+ * Copyright 2002-2025 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.
@@ -172,6 +172,10 @@ public final class OAuth2LoginConfigurer<B extends HttpSecurityBuilder<B>>
 
 	private String loginProcessingUrl = OAuth2LoginAuthenticationFilter.DEFAULT_FILTER_PROCESSES_URI;
 
+	private ClientRegistrationRepository clientRegistrationRepository;
+
+	private OAuth2AuthorizedClientRepository authorizedClientRepository;
+
 	/**
 	 * Sets the repository of client registrations.
 	 * @param clientRegistrationRepository the repository of client registrations
@@ -181,6 +185,7 @@ public final class OAuth2LoginConfigurer<B extends HttpSecurityBuilder<B>>
 			ClientRegistrationRepository clientRegistrationRepository) {
 		Assert.notNull(clientRegistrationRepository, "clientRegistrationRepository cannot be null");
 		this.getBuilder().setSharedObject(ClientRegistrationRepository.class, clientRegistrationRepository);
+		this.clientRegistrationRepository = clientRegistrationRepository;
 		return this;
 	}
 
@@ -194,6 +199,7 @@ public final class OAuth2LoginConfigurer<B extends HttpSecurityBuilder<B>>
 			OAuth2AuthorizedClientRepository authorizedClientRepository) {
 		Assert.notNull(authorizedClientRepository, "authorizedClientRepository cannot be null");
 		this.getBuilder().setSharedObject(OAuth2AuthorizedClientRepository.class, authorizedClientRepository);
+		this.authorizedClientRepository = authorizedClientRepository;
 		return this;
 	}
 
@@ -339,8 +345,7 @@ public final class OAuth2LoginConfigurer<B extends HttpSecurityBuilder<B>>
 	@Override
 	public void init(B http) throws Exception {
 		OAuth2LoginAuthenticationFilter authenticationFilter = new OAuth2LoginAuthenticationFilter(
-				OAuth2ClientConfigurerUtils.getClientRegistrationRepository(this.getBuilder()),
-				OAuth2ClientConfigurerUtils.getAuthorizedClientRepository(this.getBuilder()), this.loginProcessingUrl);
+				this.getClientRegistrationRepository(), this.getAuthorizedClientRepository(), this.loginProcessingUrl);
 		authenticationFilter.setSecurityContextHolderStrategy(getSecurityContextHolderStrategy());
 		this.setAuthenticationFilter(authenticationFilter);
 		super.loginProcessingUrl(this.loginProcessingUrl);
@@ -406,8 +411,7 @@ public final class OAuth2LoginConfigurer<B extends HttpSecurityBuilder<B>>
 				authorizationRequestBaseUri = OAuth2AuthorizationRequestRedirectFilter.DEFAULT_AUTHORIZATION_REQUEST_BASE_URI;
 			}
 			authorizationRequestFilter = new OAuth2AuthorizationRequestRedirectFilter(
-					OAuth2ClientConfigurerUtils.getClientRegistrationRepository(this.getBuilder()),
-					authorizationRequestBaseUri);
+					this.getClientRegistrationRepository(), authorizationRequestBaseUri);
 		}
 		if (this.authorizationEndpointConfig.authorizationRequestRepository != null) {
 			authorizationRequestFilter
@@ -439,6 +443,16 @@ public final class OAuth2LoginConfigurer<B extends HttpSecurityBuilder<B>>
 		return new AntPathRequestMatcher(loginProcessingUrl);
 	}
 
+	private ClientRegistrationRepository getClientRegistrationRepository() {
+		return (this.clientRegistrationRepository != null) ? this.clientRegistrationRepository
+				: OAuth2ClientConfigurerUtils.getClientRegistrationRepository(this.getBuilder());
+	}
+
+	private OAuth2AuthorizedClientRepository getAuthorizedClientRepository() {
+		return (this.authorizedClientRepository != null) ? this.authorizedClientRepository
+				: OAuth2ClientConfigurerUtils.getAuthorizedClientRepository(this.getBuilder());
+	}
+
 	@SuppressWarnings("unchecked")
 	private JwtDecoderFactory<ClientRegistration> getJwtDecoderFactoryBean() {
 		ResolvableType type = ResolvableType.forClassWithGenerics(JwtDecoderFactory.class, ClientRegistration.class);
@@ -529,8 +543,7 @@ public final class OAuth2LoginConfigurer<B extends HttpSecurityBuilder<B>>
 	@SuppressWarnings("unchecked")
 	private Map<String, String> getLoginLinks() {
 		Iterable<ClientRegistration> clientRegistrations = null;
-		ClientRegistrationRepository clientRegistrationRepository = OAuth2ClientConfigurerUtils
-			.getClientRegistrationRepository(this.getBuilder());
+		ClientRegistrationRepository clientRegistrationRepository = this.getClientRegistrationRepository();
 		ResolvableType type = ResolvableType.forInstance(clientRegistrationRepository).as(Iterable.class);
 		if (type != ResolvableType.NONE && ClientRegistration.class.isAssignableFrom(type.resolveGenerics()[0])) {
 			clientRegistrations = (Iterable<ClientRegistration>) clientRegistrationRepository;

config/src/test/java/org/springframework/security/config/annotation/web/configurers/oauth2/client/OAuth2ClientConfigurerTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2025 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.
@@ -75,6 +75,7 @@ import static org.mockito.ArgumentMatchers.anyString;
 import static org.mockito.BDDMockito.given;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.verifyNoInteractions;
 import static org.springframework.security.config.Customizer.withDefaults;
 import static org.springframework.security.test.web.servlet.request.SecurityMockMvcRequestPostProcessors.authentication;
 import static org.springframework.security.test.web.servlet.request.SecurityMockMvcRequestPostProcessors.user;
@@ -285,6 +286,49 @@ public class OAuth2ClientConfigurerTests {
 		verify(authorizationRedirectStrategy).sendRedirect(any(), any(), anyString());
 	}
 
+	@Test
+	public void configureWhenOAuth2LoginBeansConfiguredThenNotShared() throws Exception {
+		this.spring.register(OAuth2ClientConfigWithOAuth2Login.class).autowire();
+		// Setup the Authorization Request in the session
+		Map<String, Object> attributes = new HashMap<>();
+		attributes.put(OAuth2ParameterNames.REGISTRATION_ID, this.registration1.getRegistrationId());
+		// @formatter:off
+		OAuth2AuthorizationRequest authorizationRequest = OAuth2AuthorizationRequest.authorizationCode()
+			.authorizationUri(this.registration1.getProviderDetails().getAuthorizationUri())
+			.clientId(this.registration1.getClientId())
+			.redirectUri("http://localhost/client-1")
+			.state("state")
+			.attributes(attributes)
+			.build();
+		// @formatter:on
+		AuthorizationRequestRepository<OAuth2AuthorizationRequest> authorizationRequestRepository = new HttpSessionOAuth2AuthorizationRequestRepository();
+		MockHttpServletRequest request = new MockHttpServletRequest("GET", "");
+		MockHttpServletResponse response = new MockHttpServletResponse();
+		authorizationRequestRepository.saveAuthorizationRequest(authorizationRequest, request, response);
+		MockHttpSession session = (MockHttpSession) request.getSession();
+		String principalName = "user1";
+		TestingAuthenticationToken authentication = new TestingAuthenticationToken(principalName, "password");
+		// @formatter:off
+		MockHttpServletRequestBuilder clientRequest = get("/client-1")
+			.param(OAuth2ParameterNames.CODE, "code")
+			.param(OAuth2ParameterNames.STATE, "state")
+			.with(authentication(authentication))
+			.session(session);
+		this.mockMvc.perform(clientRequest)
+			.andExpect(status().is3xxRedirection())
+			.andExpect(redirectedUrl("http://localhost/client-1"));
+		// @formatter:on
+		OAuth2AuthorizedClient authorizedClient = authorizedClientRepository
+			.loadAuthorizedClient(this.registration1.getRegistrationId(), authentication, request);
+		assertThat(authorizedClient).isNotNull();
+		// Ensure shared objects set for OAuth2 Client are not used
+		ClientRegistrationRepository clientRegistrationRepository = this.spring.getContext()
+			.getBean(ClientRegistrationRepository.class);
+		OAuth2AuthorizedClientRepository authorizedClientRepository = this.spring.getContext()
+			.getBean(OAuth2AuthorizedClientRepository.class);
+		verifyNoInteractions(clientRegistrationRepository, authorizedClientRepository);
+	}
+
 	@EnableWebSecurity
 	@Configuration
 	@EnableWebMvc
@@ -362,4 +406,51 @@ public class OAuth2ClientConfigurerTests {
 
 	}
 
+	@Configuration
+	@EnableWebSecurity
+	@EnableWebMvc
+	static class OAuth2ClientConfigWithOAuth2Login {
+
+		private final ClientRegistrationRepository clientRegistrationRepository = mock(
+				ClientRegistrationRepository.class);
+
+		private final OAuth2AuthorizedClientRepository authorizedClientRepository = mock(
+				OAuth2AuthorizedClientRepository.class);
+
+		@Bean
+		SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
+			// @formatter:off
+			http
+				.authorizeHttpRequests((authorize) -> authorize
+					.anyRequest().authenticated()
+				)
+				.oauth2Client((oauth2Client) -> oauth2Client
+					.clientRegistrationRepository(OAuth2ClientConfigurerTests.clientRegistrationRepository)
+					.authorizedClientService(OAuth2ClientConfigurerTests.authorizedClientService)
+					.authorizationCodeGrant((authorizationCode) -> authorizationCode
+						.authorizationRequestResolver(authorizationRequestResolver)
+						.authorizationRedirectStrategy(authorizationRedirectStrategy)
+						.accessTokenResponseClient(accessTokenResponseClient)
+					)
+				)
+				.oauth2Login((oauth2Login) -> oauth2Login
+					.clientRegistrationRepository(this.clientRegistrationRepository)
+					.authorizedClientRepository(this.authorizedClientRepository)
+				);
+			// @formatter:on
+			return http.build();
+		}
+
+		@Bean
+		ClientRegistrationRepository clientRegistrationRepository() {
+			return this.clientRegistrationRepository;
+		}
+
+		@Bean
+		OAuth2AuthorizedClientRepository authorizedClientRepository() {
+			return this.authorizedClientRepository;
+		}
+
+	}
+
 }

config/src/test/java/org/springframework/security/config/annotation/web/configurers/oauth2/client/OAuth2LoginConfigurerTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2024 the original author or authors.
+ * Copyright 2002-2025 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.
@@ -73,7 +73,9 @@ import org.springframework.security.oauth2.client.userinfo.OAuth2UserRequest;
 import org.springframework.security.oauth2.client.userinfo.OAuth2UserService;
 import org.springframework.security.oauth2.client.web.AuthorizationRequestRepository;
 import org.springframework.security.oauth2.client.web.HttpSessionOAuth2AuthorizationRequestRepository;
+import org.springframework.security.oauth2.client.web.HttpSessionOAuth2AuthorizedClientRepository;
 import org.springframework.security.oauth2.client.web.OAuth2AuthorizationRequestResolver;
+import org.springframework.security.oauth2.client.web.OAuth2AuthorizedClientRepository;
 import org.springframework.security.oauth2.core.OAuth2AccessToken;
 import org.springframework.security.oauth2.core.endpoint.OAuth2AccessTokenResponse;
 import org.springframework.security.oauth2.core.endpoint.OAuth2AuthorizationRequest;
@@ -115,6 +117,7 @@ import static org.mockito.BDDMockito.then;
 import static org.mockito.Mockito.atLeastOnce;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.verifyNoInteractions;
 import static org.springframework.security.config.annotation.SecurityContextChangedListenerArgumentMatchers.setAuthentication;
 import static org.springframework.security.test.web.servlet.request.SecurityMockMvcRequestPostProcessors.authentication;
 import static org.springframework.security.test.web.servlet.request.SecurityMockMvcRequestPostProcessors.csrf;
@@ -669,6 +672,30 @@ public class OAuth2LoginConfigurerTests {
 			.collect(Collectors.toList())).isEmpty();
 	}
 
+	@Test
+	public void oidcLoginWhenOAuth2ClientBeansConfiguredThenNotShared() throws Exception {
+		this.spring.register(OAuth2LoginConfigWithOAuth2Client.class, JwtDecoderFactoryConfig.class).autowire();
+		OAuth2AuthorizationRequest authorizationRequest = createOAuth2AuthorizationRequest("openid");
+		this.authorizationRequestRepository.saveAuthorizationRequest(authorizationRequest, this.request, this.response);
+		this.request.setParameter("code", "code123");
+		this.request.setParameter("state", authorizationRequest.getState());
+		this.springSecurityFilterChain.doFilter(this.request, this.response, this.filterChain);
+		Authentication authentication = this.securityContextRepository
+			.loadContext(new HttpRequestResponseHolder(this.request, this.response))
+			.getAuthentication();
+		assertThat(authentication.getAuthorities()).hasSize(1);
+		assertThat(authentication.getAuthorities()).first()
+			.isInstanceOf(OidcUserAuthority.class)
+			.hasToString("OIDC_USER");
+
+		// Ensure shared objects set for OAuth2 Client are not used
+		ClientRegistrationRepository clientRegistrationRepository = this.spring.getContext()
+			.getBean(ClientRegistrationRepository.class);
+		OAuth2AuthorizedClientRepository authorizedClientRepository = this.spring.getContext()
+			.getBean(OAuth2AuthorizedClientRepository.class);
+		verifyNoInteractions(clientRegistrationRepository, authorizedClientRepository);
+	}
+
 	private void loadConfig(Class<?>... configs) {
 		AnnotationConfigWebApplicationContext applicationContext = new AnnotationConfigWebApplicationContext();
 		applicationContext.register(configs);
@@ -1192,6 +1219,45 @@ public class OAuth2LoginConfigurerTests {
 
 	}
 
+	@Configuration
+	@EnableWebSecurity
+	static class OAuth2LoginConfigWithOAuth2Client extends CommonLambdaSecurityFilterChainConfig {
+
+		private final ClientRegistrationRepository clientRegistrationRepository = mock(
+				ClientRegistrationRepository.class);
+
+		private final OAuth2AuthorizedClientRepository authorizedClientRepository = mock(
+				OAuth2AuthorizedClientRepository.class);
+
+		@Bean
+		SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
+			// @formatter:off
+			http
+				.oauth2Login((oauth2Login) -> oauth2Login
+					.clientRegistrationRepository(
+						new InMemoryClientRegistrationRepository(GOOGLE_CLIENT_REGISTRATION))
+					.authorizedClientRepository(new HttpSessionOAuth2AuthorizedClientRepository())
+				)
+				.oauth2Client((oauth2Client) -> oauth2Client
+					.clientRegistrationRepository(this.clientRegistrationRepository)
+					.authorizedClientRepository(this.authorizedClientRepository)
+				);
+			// @formatter:on
+			return super.configureFilterChain(http);
+		}
+
+		@Bean
+		ClientRegistrationRepository clientRegistrationRepository() {
+			return this.clientRegistrationRepository;
+		}
+
+		@Bean
+		OAuth2AuthorizedClientRepository authorizedClientRepository() {
+			return this.authorizedClientRepository;
+		}
+
+	}
+
 	private abstract static class CommonSecurityFilterChainConfig {
 
 		SecurityFilterChain configureFilterChain(HttpSecurity http) throws Exception {