diff --git a/spring-web/src/main/java/org/springframework/web/cors/reactive/CorsUtils.java b/spring-web/src/main/java/org/springframework/web/cors/reactive/CorsUtils.java
index da8569d78c0..663f0f06348 100644
--- a/spring-web/src/main/java/org/springframework/web/cors/reactive/CorsUtils.java
+++ b/spring-web/src/main/java/org/springframework/web/cors/reactive/CorsUtils.java
@@ -69,13 +69,16 @@ public abstract class CorsUtils {
 		}
 
 		URI uri = request.getURI();
+		String actualScheme = uri.getScheme();
 		String actualHost = uri.getHost();
 		int actualPort = getPort(uri.getScheme(), uri.getPort());
+		Assert.notNull(actualScheme, "Actual request scheme must not be null");
 		Assert.notNull(actualHost, "Actual request host must not be null");
 		Assert.isTrue(actualPort != -1, "Actual request port must not be undefined");
 
 		UriComponents originUrl = UriComponentsBuilder.fromOriginHeader(origin).build();
-		return (actualHost.equals(originUrl.getHost()) &&
+		return (actualScheme.equals(originUrl.getScheme()) &&
+				actualHost.equals(originUrl.getHost()) &&
 				actualPort == getPort(originUrl.getScheme(), originUrl.getPort()));
 	}
 
diff --git a/spring-web/src/main/java/org/springframework/web/util/WebUtils.java b/spring-web/src/main/java/org/springframework/web/util/WebUtils.java
index 4139acf94ac..5face07f544 100644
--- a/spring-web/src/main/java/org/springframework/web/util/WebUtils.java
+++ b/spring-web/src/main/java/org/springframework/web/util/WebUtils.java
@@ -813,7 +813,8 @@ public abstract class WebUtils {
 		}
 
 		UriComponents originUrl = UriComponentsBuilder.fromOriginHeader(origin).build();
-		return (ObjectUtils.nullSafeEquals(host, originUrl.getHost()) &&
+		return (ObjectUtils.nullSafeEquals(scheme, originUrl.getScheme()) &&
+				ObjectUtils.nullSafeEquals(host, originUrl.getHost()) &&
 				getPort(scheme, port) == getPort(originUrl.getScheme(), originUrl.getPort()));
 	}
 
diff --git a/spring-web/src/test/java/org/springframework/web/cors/reactive/CorsUtilsTests.java b/spring-web/src/test/java/org/springframework/web/cors/reactive/CorsUtilsTests.java
index 96ee57a298e..617bf825461 100644
--- a/spring-web/src/test/java/org/springframework/web/cors/reactive/CorsUtilsTests.java
+++ b/spring-web/src/test/java/org/springframework/web/cors/reactive/CorsUtilsTests.java
@@ -92,6 +92,15 @@ public class CorsUtilsTests {
 		testWithForwardedHeader(server, 123, "proto=https; host=mydomain2.com:456", "https://mydomain2.com:456");
 	}
 
+	@Test  // SPR-16362
+	public void isSameOriginWithDifferentSchemes() {
+		MockServerHttpRequest request = MockServerHttpRequest
+				.get("http://mydomain1.com")
+				.header(HttpHeaders.ORIGIN, "https://mydomain1.com")
+				.build();
+		assertFalse(CorsUtils.isSameOrigin(request));
+	}
+
 	private void testWithXForwardedHeaders(String serverName, int port,
 			String forwardedProto, String forwardedHost, int forwardedPort, String originHeader) {
 
diff --git a/spring-web/src/test/java/org/springframework/web/util/WebUtilsTests.java b/spring-web/src/test/java/org/springframework/web/util/WebUtilsTests.java
index 1e384878418..99a6736f1ae 100644
--- a/spring-web/src/test/java/org/springframework/web/util/WebUtilsTests.java
+++ b/spring-web/src/test/java/org/springframework/web/util/WebUtilsTests.java
@@ -105,39 +105,40 @@ public class WebUtilsTests {
 
 	@Test
 	public void isSameOrigin() {
-		assertTrue(checkSameOrigin("mydomain1.com", -1, "http://mydomain1.com"));
-		assertTrue(checkSameOrigin("mydomain1.com", -1, "http://mydomain1.com:80"));
-		assertTrue(checkSameOrigin("mydomain1.com", 443, "https://mydomain1.com"));
-		assertTrue(checkSameOrigin("mydomain1.com", 443, "https://mydomain1.com:443"));
-		assertTrue(checkSameOrigin("mydomain1.com", 123, "http://mydomain1.com:123"));
-		assertTrue(checkSameOrigin("mydomain1.com", -1, "ws://mydomain1.com"));
-		assertTrue(checkSameOrigin("mydomain1.com", 443, "wss://mydomain1.com"));
-
-		assertFalse(checkSameOrigin("mydomain1.com", -1, "http://mydomain2.com"));
-		assertFalse(checkSameOrigin("mydomain1.com", -1, "https://mydomain1.com"));
-		assertFalse(checkSameOrigin("mydomain1.com", -1, "invalid-origin"));
+		assertTrue(checkSameOrigin("http", "mydomain1.com", -1, "http://mydomain1.com"));
+		assertTrue(checkSameOrigin("http", "mydomain1.com", -1, "http://mydomain1.com:80"));
+		assertTrue(checkSameOrigin("https", "mydomain1.com", 443, "https://mydomain1.com"));
+		assertTrue(checkSameOrigin("https", "mydomain1.com", 443, "https://mydomain1.com:443"));
+		assertTrue(checkSameOrigin("http", "mydomain1.com", 123, "http://mydomain1.com:123"));
+		assertTrue(checkSameOrigin("ws", "mydomain1.com", -1, "ws://mydomain1.com"));
+		assertTrue(checkSameOrigin("wss", "mydomain1.com", 443, "wss://mydomain1.com"));
+
+		assertFalse(checkSameOrigin("http", "mydomain1.com", -1, "http://mydomain2.com"));
+		assertFalse(checkSameOrigin("http", "mydomain1.com", -1, "https://mydomain1.com"));
+		assertFalse(checkSameOrigin("http", "mydomain1.com", -1, "invalid-origin"));
+		assertFalse(checkSameOrigin("https", "mydomain1.com", -1, "http://mydomain1.com"));
 
 		// Handling of invalid origins as described in SPR-13478
-		assertTrue(checkSameOrigin("mydomain1.com", -1, "http://mydomain1.com/"));
-		assertTrue(checkSameOrigin("mydomain1.com", -1, "http://mydomain1.com:80/"));
-		assertTrue(checkSameOrigin("mydomain1.com", -1, "http://mydomain1.com/path"));
-		assertTrue(checkSameOrigin("mydomain1.com", -1, "http://mydomain1.com:80/path"));
-		assertFalse(checkSameOrigin("mydomain2.com", -1, "http://mydomain1.com/"));
-		assertFalse(checkSameOrigin("mydomain2.com", -1, "http://mydomain1.com:80/"));
-		assertFalse(checkSameOrigin("mydomain2.com", -1, "http://mydomain1.com/path"));
-		assertFalse(checkSameOrigin("mydomain2.com", -1, "http://mydomain1.com:80/path"));
+		assertTrue(checkSameOrigin("http", "mydomain1.com", -1, "http://mydomain1.com/"));
+		assertTrue(checkSameOrigin("http", "mydomain1.com", -1, "http://mydomain1.com:80/"));
+		assertTrue(checkSameOrigin("http", "mydomain1.com", -1, "http://mydomain1.com/path"));
+		assertTrue(checkSameOrigin("http", "mydomain1.com", -1, "http://mydomain1.com:80/path"));
+		assertFalse(checkSameOrigin("http", "mydomain2.com", -1, "http://mydomain1.com/"));
+		assertFalse(checkSameOrigin("http", "mydomain2.com", -1, "http://mydomain1.com:80/"));
+		assertFalse(checkSameOrigin("http", "mydomain2.com", -1, "http://mydomain1.com/path"));
+		assertFalse(checkSameOrigin("http", "mydomain2.com", -1, "http://mydomain1.com:80/path"));
 
 		// Handling of IPv6 hosts as described in SPR-13525
-		assertTrue(checkSameOrigin("[::1]", -1, "http://[::1]"));
-		assertTrue(checkSameOrigin("[::1]", 8080, "http://[::1]:8080"));
-		assertTrue(checkSameOrigin(
+		assertTrue(checkSameOrigin("http", "[::1]", -1, "http://[::1]"));
+		assertTrue(checkSameOrigin("http", "[::1]", 8080, "http://[::1]:8080"));
+		assertTrue(checkSameOrigin("http",
 				"[2001:0db8:0000:85a3:0000:0000:ac1f:8001]", -1,
 				"http://[2001:0db8:0000:85a3:0000:0000:ac1f:8001]"));
-		assertTrue(checkSameOrigin(
+		assertTrue(checkSameOrigin("http",
 				"[2001:0db8:0000:85a3:0000:0000:ac1f:8001]", 8080,
 				"http://[2001:0db8:0000:85a3:0000:0000:ac1f:8001]:8080"));
-		assertFalse(checkSameOrigin("[::1]", -1, "http://[::1]:8080"));
-		assertFalse(checkSameOrigin("[::1]", 8080,
+		assertFalse(checkSameOrigin("http", "[::1]", -1, "http://[::1]:8080"));
+		assertFalse(checkSameOrigin("http", "[::1]", 8080,
 				"http://[2001:0db8:0000:85a3:0000:0000:ac1f:8001]:8080"));
 	}
 
@@ -175,9 +176,10 @@ public class WebUtilsTests {
 		return WebUtils.isValidOrigin(request, allowed);
 	}
 
-	private boolean checkSameOrigin(String serverName, int port, String originHeader) {
+	private boolean checkSameOrigin(String scheme, String serverName, int port, String originHeader) {
 		MockHttpServletRequest servletRequest = new MockHttpServletRequest();
 		ServerHttpRequest request = new ServletServerHttpRequest(servletRequest);
+		servletRequest.setScheme(scheme);
 		servletRequest.setServerName(serverName);
 		if (port != -1) {
 			servletRequest.setServerPort(port);