Merge branch '7.0.x'

access/src/main/java/org/springframework/security/web/access/expression/WebExpressionConfigAttribute.java

@@ -35,6 +35,7 @@ import org.springframework.security.web.FilterInvocation;
  */
 @Deprecated
 @NullUnmarked
+@SuppressWarnings("serial")
 class WebExpressionConfigAttribute implements ConfigAttribute, EvaluationContextPostProcessor<FilterInvocation> {
 
 	private final Expression authorizeExpression;

cas/src/main/java/org/springframework/security/cas/jackson/CasJacksonModule.java

@@ -48,6 +48,7 @@ import org.springframework.security.jackson.SecurityJacksonModules;
  * @since 7.0
  * @see SecurityJacksonModules
  */
+@SuppressWarnings("serial")
 public class CasJacksonModule extends SecurityJacksonModule {
 
 	public CasJacksonModule() {

config/src/test/java/org/springframework/security/SerializationSamples.java

@@ -86,6 +86,9 @@ import org.springframework.security.authentication.password.CompromisedPasswordE
 import org.springframework.security.authorization.AuthorityAuthorizationDecision;
 import org.springframework.security.authorization.AuthorizationDecision;
 import org.springframework.security.authorization.AuthorizationDeniedException;
+import org.springframework.security.authorization.FactorAuthorizationDecision;
+import org.springframework.security.authorization.RequiredFactor;
+import org.springframework.security.authorization.RequiredFactorError;
 import org.springframework.security.authorization.event.AuthorizationEvent;
 import org.springframework.security.authorization.event.AuthorizationGrantedEvent;
 import org.springframework.security.cas.authentication.CasAssertionAuthenticationToken;
@@ -162,6 +165,7 @@ import org.springframework.security.oauth2.jwt.JwtException;
 import org.springframework.security.oauth2.jwt.JwtValidationException;
 import org.springframework.security.oauth2.jwt.TestJwts;
 import org.springframework.security.oauth2.server.authorization.OAuth2Authorization;
+import org.springframework.security.oauth2.server.authorization.OAuth2AuthorizationCode;
 import org.springframework.security.oauth2.server.authorization.OAuth2AuthorizationConsent;
 import org.springframework.security.oauth2.server.authorization.OAuth2AuthorizationServerMetadata;
 import org.springframework.security.oauth2.server.authorization.OAuth2ClientRegistration;
@@ -169,15 +173,22 @@ import org.springframework.security.oauth2.server.authorization.OAuth2TokenIntro
 import org.springframework.security.oauth2.server.authorization.OAuth2TokenType;
 import org.springframework.security.oauth2.server.authorization.TestOAuth2Authorizations;
 import org.springframework.security.oauth2.server.authorization.authentication.OAuth2AccessTokenAuthenticationToken;
+import org.springframework.security.oauth2.server.authorization.authentication.OAuth2AuthorizationCodeRequestAuthenticationException;
 import org.springframework.security.oauth2.server.authorization.authentication.OAuth2AuthorizationCodeRequestAuthenticationToken;
 import org.springframework.security.oauth2.server.authorization.authentication.OAuth2AuthorizationConsentAuthenticationToken;
 import org.springframework.security.oauth2.server.authorization.authentication.OAuth2AuthorizationGrantAuthenticationToken;
 import org.springframework.security.oauth2.server.authorization.authentication.OAuth2ClientAuthenticationToken;
+import org.springframework.security.oauth2.server.authorization.authentication.OAuth2ClientCredentialsAuthenticationToken;
 import org.springframework.security.oauth2.server.authorization.authentication.OAuth2ClientRegistrationAuthenticationToken;
 import org.springframework.security.oauth2.server.authorization.authentication.OAuth2DeviceAuthorizationConsentAuthenticationToken;
 import org.springframework.security.oauth2.server.authorization.authentication.OAuth2DeviceAuthorizationRequestAuthenticationToken;
+import org.springframework.security.oauth2.server.authorization.authentication.OAuth2DeviceCodeAuthenticationToken;
 import org.springframework.security.oauth2.server.authorization.authentication.OAuth2DeviceVerificationAuthenticationToken;
 import org.springframework.security.oauth2.server.authorization.authentication.OAuth2PushedAuthorizationRequestAuthenticationToken;
+import org.springframework.security.oauth2.server.authorization.authentication.OAuth2RefreshTokenAuthenticationToken;
+import org.springframework.security.oauth2.server.authorization.authentication.OAuth2TokenExchangeActor;
+import org.springframework.security.oauth2.server.authorization.authentication.OAuth2TokenExchangeAuthenticationToken;
+import org.springframework.security.oauth2.server.authorization.authentication.OAuth2TokenExchangeCompositeAuthenticationToken;
 import org.springframework.security.oauth2.server.authorization.authentication.OAuth2TokenIntrospectionAuthenticationToken;
 import org.springframework.security.oauth2.server.authorization.authentication.OAuth2TokenRevocationAuthenticationToken;
 import org.springframework.security.oauth2.server.authorization.client.RegisteredClient;
@@ -191,6 +202,7 @@ import org.springframework.security.oauth2.server.authorization.settings.Authori
 import org.springframework.security.oauth2.server.authorization.settings.ClientSettings;
 import org.springframework.security.oauth2.server.authorization.settings.OAuth2TokenFormat;
 import org.springframework.security.oauth2.server.authorization.settings.TokenSettings;
+import org.springframework.security.oauth2.server.authorization.token.OAuth2TokenClaimNames;
 import org.springframework.security.oauth2.server.resource.BearerTokenError;
 import org.springframework.security.oauth2.server.resource.BearerTokenErrors;
 import org.springframework.security.oauth2.server.resource.InvalidBearerTokenException;
@@ -251,6 +263,7 @@ import org.springframework.security.web.webauthn.api.AuthenticationExtensionsCli
 import org.springframework.security.web.webauthn.api.AuthenticationExtensionsClientOutputs;
 import org.springframework.security.web.webauthn.api.AuthenticatorAssertionResponse;
 import org.springframework.security.web.webauthn.api.AuthenticatorAttachment;
+import org.springframework.security.web.webauthn.api.AuthenticatorAttestationResponse;
 import org.springframework.security.web.webauthn.api.AuthenticatorSelectionCriteria;
 import org.springframework.security.web.webauthn.api.AuthenticatorTransport;
 import org.springframework.security.web.webauthn.api.Bytes;
@@ -271,6 +284,7 @@ import org.springframework.security.web.webauthn.api.PublicKeyCredentialType;
 import org.springframework.security.web.webauthn.api.PublicKeyCredentialUserEntity;
 import org.springframework.security.web.webauthn.api.ResidentKeyRequirement;
 import org.springframework.security.web.webauthn.api.TestAuthenticationAssertionResponses;
+import org.springframework.security.web.webauthn.api.TestAuthenticatorAttestationResponses;
 import org.springframework.security.web.webauthn.api.TestBytes;
 import org.springframework.security.web.webauthn.api.TestPublicKeyCredentialCreationOptions;
 import org.springframework.security.web.webauthn.api.TestPublicKeyCredentialRequestOptions;
@@ -445,6 +459,8 @@ final class SerializationSamples {
 		generatorByClassName.put(RegisteredClient.class, (r) -> registeredClient);
 		generatorByClassName.put(OAuth2Authorization.class, (r) -> authorization);
 		generatorByClassName.put(OAuth2Authorization.Token.class, (r) -> authorization.getAccessToken());
+		generatorByClassName.put(OAuth2AuthorizationCode.class,
+				(r) -> new OAuth2AuthorizationCode("code", Instant.now(), Instant.now().plusSeconds(300)));
 		generatorByClassName.put(OAuth2AuthorizationConsent.class,
 				(r) -> OAuth2AuthorizationConsent.withId("registeredClientId", "principalName")
 					.scope("scope1")
@@ -470,6 +486,58 @@ final class SerializationSamples {
 			authenticationToken.setDetails(details);
 			return authenticationToken;
 		});
+		generatorByClassName.put(
+				org.springframework.security.oauth2.server.authorization.authentication.OAuth2AuthorizationCodeAuthenticationToken.class,
+				(r) -> {
+					org.springframework.security.oauth2.server.authorization.authentication.OAuth2AuthorizationCodeAuthenticationToken token = new org.springframework.security.oauth2.server.authorization.authentication.OAuth2AuthorizationCodeAuthenticationToken(
+							"code", principal, "https://localhost/callback", Map.of("custom_param", "custom_value"));
+					token.setDetails(details);
+					return token;
+				});
+		generatorByClassName.put(OAuth2AuthorizationCodeRequestAuthenticationException.class, (r) -> {
+			OAuth2AuthorizationCodeRequestAuthenticationToken authToken = new OAuth2AuthorizationCodeRequestAuthenticationToken(
+					"https://localhost/authorize", "clientId", principal, "https://localhost/callback", "state",
+					authorizationRequest.getScopes(), authorizationRequest.getAdditionalParameters());
+			return new OAuth2AuthorizationCodeRequestAuthenticationException(
+					new OAuth2Error("invalid_request", "Missing required parameter", "https://example.com/error"),
+					authToken);
+		});
+		generatorByClassName.put(OAuth2ClientCredentialsAuthenticationToken.class, (r) -> {
+			OAuth2ClientCredentialsAuthenticationToken token = new OAuth2ClientCredentialsAuthenticationToken(principal,
+					Set.of("scope1", "scope2"), Map.of("custom_param", "custom_value"));
+			token.setDetails(details);
+			return token;
+		});
+		generatorByClassName.put(OAuth2DeviceCodeAuthenticationToken.class, (r) -> {
+			OAuth2DeviceCodeAuthenticationToken token = new OAuth2DeviceCodeAuthenticationToken("device-code",
+					principal, Map.of("custom_param", "custom_value"));
+			token.setDetails(details);
+			return token;
+		});
+		generatorByClassName.put(OAuth2RefreshTokenAuthenticationToken.class, (r) -> {
+			OAuth2RefreshTokenAuthenticationToken token = new OAuth2RefreshTokenAuthenticationToken("refresh-token",
+					principal, Set.of("scope1", "scope2"), Map.of("custom_param", "custom_value"));
+			token.setDetails(details);
+			return token;
+		});
+		generatorByClassName.put(OAuth2TokenExchangeAuthenticationToken.class, (r) -> {
+			OAuth2TokenExchangeAuthenticationToken token = new OAuth2TokenExchangeAuthenticationToken(
+					"urn:ietf:params:oauth:token-type:access_token", "subject-token",
+					"urn:ietf:params:oauth:token-type:jwt", principal, "actor-token",
+					"urn:ietf:params:oauth:token-type:jwt", Set.of("https://resource.example.com"), Set.of("audience"),
+					Set.of("scope1"), Map.of("custom_param", "custom_value"));
+			token.setDetails(details);
+			return token;
+		});
+		OAuth2TokenExchangeActor actor = new OAuth2TokenExchangeActor(Map.of(OAuth2TokenClaimNames.ISS,
+				"https://issuer.example.com", OAuth2TokenClaimNames.SUB, "actor-subject"));
+		generatorByClassName.put(OAuth2TokenExchangeActor.class, (r) -> actor);
+		generatorByClassName.put(OAuth2TokenExchangeCompositeAuthenticationToken.class, (r) -> {
+			AbstractAuthenticationToken token = new OAuth2TokenExchangeCompositeAuthenticationToken(authentication,
+					List.of(actor));
+			token.setDetails(details);
+			return token;
+		});
 		generatorByClassName.put(OAuth2AuthorizationConsentAuthenticationToken.class, (r) -> {
 			OAuth2AuthorizationConsentAuthenticationToken authenticationToken = new OAuth2AuthorizationConsentAuthenticationToken(
 					"authorizationUri", "clientId", principal, "state", authorizationRequest.getScopes(),
@@ -685,6 +753,12 @@ final class SerializationSamples {
 		generatorByClassName.put(AuthorizationDecision.class, (r) -> new AuthorizationDecision(true));
 		generatorByClassName.put(AuthorityAuthorizationDecision.class,
 				(r) -> new AuthorityAuthorizationDecision(true, AuthorityUtils.createAuthorityList("ROLE_USER")));
+		RequiredFactor factor = RequiredFactor.withAuthority("authority").validDuration(Duration.ofSeconds(5)).build();
+		generatorByClassName.put(RequiredFactor.class, (r) -> factor);
+		RequiredFactorError error = RequiredFactorError.createMissing(factor);
+		generatorByClassName.put(RequiredFactorError.class, (r) -> error);
+		generatorByClassName.put(FactorAuthorizationDecision.class,
+				(r) -> new FactorAuthorizationDecision(List.of(error)));
 		generatorByClassName.put(CycleInRoleHierarchyException.class, (r) -> new CycleInRoleHierarchyException());
 		generatorByClassName.put(AuthorizationEvent.class,
 				(r) -> new AuthorizationEvent(new SerializableSupplier<>(authentication), "source",
@@ -875,6 +949,8 @@ final class SerializationSamples {
 		generatorByClassName.put(CredentialPropertiesOutput.class, (o) -> credentialOutput);
 		generatorByClassName.put(ImmutableAuthenticationExtensionsClientOutputs.class, (o) -> outputs);
 		generatorByClassName.put(AuthenticatorAssertionResponse.class, (r) -> response);
+		generatorByClassName.put(AuthenticatorAttestationResponse.class,
+				(r) -> TestAuthenticatorAttestationResponses.createAuthenticatorAttestationResponse().build());
 		generatorByClassName.put(RelyingPartyAuthenticationRequest.class, (r) -> authRequest);
 		generatorByClassName.put(PublicKeyCredential.class, (r) -> credential);
 		generatorByClassName.put(WebAuthnAuthenticationRequestToken.class, (r) -> requestToken);

config/src/test/java/org/springframework/security/SpringSecurityCoreVersionSerializableTests.java

@@ -33,10 +33,10 @@ import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
+import java.util.regex.Pattern;
 import java.util.stream.Stream;
 
 import org.apache.commons.lang3.ObjectUtils;
@@ -207,10 +207,7 @@ class SpringSecurityCoreVersionSerializableTests {
 			boolean hasSerialVersion = Stream.of(clazz.getDeclaredFields())
 				.map(Field::getName)
 				.anyMatch((n) -> n.equals("serialVersionUID"));
-			SuppressWarnings suppressWarnings = clazz.getAnnotation(SuppressWarnings.class);
-			boolean hasSerialIgnore = suppressWarnings == null
-					|| Arrays.asList(suppressWarnings.value()).contains("Serial");
-			if (!hasSerialVersion && !hasSerialIgnore) {
+			if (!hasSerialVersion && !hasSuppressSerialInSource(clazz)) {
 				classes.add(clazz);
 				continue;
 			}
@@ -249,6 +246,58 @@ class SpringSecurityCoreVersionSerializableTests {
 		return classes.stream();
 	}
 
+	private static boolean hasSuppressSerialInSource(Class<?> clazz) {
+		try {
+			Class<?> fileClass = clazz;
+			while (fileClass.getEnclosingClass() != null) {
+				fileClass = fileClass.getEnclosingClass();
+			}
+			var codeSource = fileClass.getProtectionDomain().getCodeSource();
+			if (codeSource == null) {
+				return false;
+			}
+			Path sourceFile = findSourceFile(Path.of(codeSource.getLocation().toURI()), fileClass);
+			if (sourceFile == null) {
+				return false;
+			}
+			return hasSuppressSerialAnnotation(Files.readAllLines(sourceFile), clazz.getSimpleName());
+		}
+		catch (Exception ex) {
+			return false;
+		}
+	}
+
+	private static Path findSourceFile(Path start, Class<?> clazz) {
+		String relativePath = clazz.getName().replace('.', '/') + ".java";
+		Path dir = start;
+		for (int i = 0; i < 10 && dir != null; i++) {
+			for (String sourceRoot : List.of("src/main/java", "src/test/java")) {
+				Path candidate = dir.resolve(sourceRoot).resolve(relativePath);
+				if (Files.exists(candidate)) {
+					return candidate;
+				}
+			}
+			dir = dir.getParent();
+		}
+		return null;
+	}
+
+	private static boolean hasSuppressSerialAnnotation(List<String> lines, String simpleClassName) {
+		Pattern classDeclaration = Pattern
+			.compile("\\b(?:class|interface|enum|record)\\s+" + Pattern.quote(simpleClassName) + "\\b");
+		for (int i = 0; i < lines.size(); i++) {
+			if (classDeclaration.matcher(lines.get(i)).find()) {
+				for (int j = Math.max(0, i - 5); j < i; j++) {
+					String line = lines.get(j);
+					if (line.contains("@SuppressWarnings") && line.contains("\"serial\"")) {
+						return true;
+					}
+				}
+			}
+		}
+		return false;
+	}
+
 	private static String getCurrentVersion() {
 		String version = System.getProperty("springSecurityVersion");
 		String[] parts = version.split("\\.");

core/src/main/java/org/springframework/security/authorization/FactorAuthorizationDecision.java

@@ -16,6 +16,7 @@
 
 package org.springframework.security.authorization;
 
+import java.io.Serial;
 import java.util.Collections;
 import java.util.List;
 
@@ -29,6 +30,9 @@ import org.springframework.util.Assert;
  */
 public class FactorAuthorizationDecision implements AuthorizationResult {
 
+	@Serial
+	private static final long serialVersionUID = -245342816437885039L;
+
 	private final List<RequiredFactorError> factorErrors;
 
 	/**

core/src/main/java/org/springframework/security/authorization/RequiredFactor.java

@@ -16,6 +16,8 @@
 
 package org.springframework.security.authorization;
 
+import java.io.Serial;
+import java.io.Serializable;
 import java.time.Duration;
 import java.util.Objects;
 
@@ -40,7 +42,10 @@ import org.springframework.util.Assert;
  * @author Rob Winch
  * @since 7.0
  */
-public final class RequiredFactor {
+public final class RequiredFactor implements Serializable {
+
+	@Serial
+	private static final long serialVersionUID = 295501208651764485L;
 
 	private final String authority;
 

core/src/main/java/org/springframework/security/authorization/RequiredFactorError.java

@@ -16,6 +16,8 @@
 
 package org.springframework.security.authorization;
 
+import java.io.Serial;
+import java.io.Serializable;
 import java.util.Objects;
 
 import org.jspecify.annotations.Nullable;
@@ -29,7 +31,10 @@ import org.springframework.util.Assert;
  * @author Rob Winch
  * @since 7.0
  */
-public class RequiredFactorError {
+public class RequiredFactorError implements Serializable {
+
+	@Serial
+	private static final long serialVersionUID = 1946221547278528901L;
 
 	private final RequiredFactor requiredFactor;
 

core/src/test/java/org/springframework/security/authentication/NonBuildableAuthenticationToken.java

@@ -16,6 +16,7 @@
 
 package org.springframework.security.authentication;
 
+@SuppressWarnings("serial")
 public class NonBuildableAuthenticationToken extends TestingAuthenticationToken {
 
 	public NonBuildableAuthenticationToken(String user, String password, String... authorities) {

oauth2/oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/InMemoryOAuth2AuthorizationService.java

@@ -225,6 +225,7 @@ public final class InMemoryOAuth2AuthorizationService implements OAuth2Authoriza
 		return userCode != null && userCode.getToken().getTokenValue().equals(token);
 	}
 
+	@SuppressWarnings("serial")
 	private static final class MaxSizeHashMap<K, V> extends LinkedHashMap<K, V> {
 
 		private final int maxSize;

oauth2/oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/OAuth2AuthorizationCode.java

@@ -16,6 +16,7 @@
 
 package org.springframework.security.oauth2.server.authorization;
 
+import java.io.Serial;
 import java.time.Instant;
 
 import org.springframework.security.oauth2.core.AbstractOAuth2Token;
@@ -32,6 +33,9 @@ import org.springframework.security.oauth2.core.AbstractOAuth2Token;
  */
 public class OAuth2AuthorizationCode extends AbstractOAuth2Token {
 
+	@Serial
+	private static final long serialVersionUID = 3789328028057414501L;
+
 	/**
 	 * Constructs an {@code OAuth2AuthorizationCode} using the provided parameters.
 	 * @param tokenValue the token value

oauth2/oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/authentication/OAuth2AuthorizationCodeAuthenticationToken.java

@@ -16,6 +16,7 @@
 
 package org.springframework.security.oauth2.server.authorization.authentication;
 
+import java.io.Serial;
 import java.util.Map;
 
 import org.jspecify.annotations.Nullable;
@@ -37,6 +38,9 @@ import org.springframework.util.Assert;
  */
 public class OAuth2AuthorizationCodeAuthenticationToken extends OAuth2AuthorizationGrantAuthenticationToken {
 
+	@Serial
+	private static final long serialVersionUID = 4629166286850598162L;
+
 	private final String code;
 
 	private final @Nullable String redirectUri;

oauth2/oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/authentication/OAuth2AuthorizationCodeRequestAuthenticationException.java

@@ -16,8 +16,9 @@
 
 package org.springframework.security.oauth2.server.authorization.authentication;
 
-import org.jspecify.annotations.Nullable;
+import java.io.Serial;
 
+import org.springframework.lang.Nullable;
 import org.springframework.security.core.Authentication;
 import org.springframework.security.oauth2.core.OAuth2AuthenticationException;
 import org.springframework.security.oauth2.core.OAuth2Error;
@@ -34,6 +35,9 @@ import org.springframework.security.oauth2.core.OAuth2Error;
  */
 public class OAuth2AuthorizationCodeRequestAuthenticationException extends OAuth2AuthenticationException {
 
+	@Serial
+	private static final long serialVersionUID = -3791188557904282453L;
+
 	private final @Nullable OAuth2AuthorizationCodeRequestAuthenticationToken authorizationCodeRequestAuthentication;
 
 	/**

oauth2/oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/authentication/OAuth2ClientCredentialsAuthenticationToken.java

@@ -16,6 +16,7 @@
 
 package org.springframework.security.oauth2.server.authorization.authentication;
 
+import java.io.Serial;
 import java.util.Collections;
 import java.util.HashSet;
 import java.util.Map;
@@ -37,6 +38,9 @@ import org.springframework.security.oauth2.core.AuthorizationGrantType;
  */
 public class OAuth2ClientCredentialsAuthenticationToken extends OAuth2AuthorizationGrantAuthenticationToken {
 
+	@Serial
+	private static final long serialVersionUID = -220223451609576578L;
+
 	private final Set<String> scopes;
 
 	/**

oauth2/oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/authentication/OAuth2DeviceCodeAuthenticationToken.java

@@ -16,6 +16,7 @@
 
 package org.springframework.security.oauth2.server.authorization.authentication;
 
+import java.io.Serial;
 import java.util.Map;
 
 import org.jspecify.annotations.Nullable;
@@ -35,6 +36,9 @@ import org.springframework.util.Assert;
  */
 public class OAuth2DeviceCodeAuthenticationToken extends OAuth2AuthorizationGrantAuthenticationToken {
 
+	@Serial
+	private static final long serialVersionUID = 8364555864666204030L;
+
 	private final String deviceCode;
 
 	/**

oauth2/oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/authentication/OAuth2RefreshTokenAuthenticationToken.java

@@ -16,6 +16,7 @@
 
 package org.springframework.security.oauth2.server.authorization.authentication;
 
+import java.io.Serial;
 import java.util.Collections;
 import java.util.HashSet;
 import java.util.Map;
@@ -37,6 +38,9 @@ import org.springframework.util.Assert;
  */
 public class OAuth2RefreshTokenAuthenticationToken extends OAuth2AuthorizationGrantAuthenticationToken {
 
+	@Serial
+	private static final long serialVersionUID = 328697547826078993L;
+
 	private final String refreshToken;
 
 	private final Set<String> scopes;

oauth2/oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/authentication/OAuth2TokenExchangeActor.java

@@ -16,6 +16,8 @@
 
 package org.springframework.security.oauth2.server.authorization.authentication;
 
+import java.io.Serial;
+import java.io.Serializable;
 import java.util.Collections;
 import java.util.Map;
 import java.util.Objects;
@@ -33,7 +35,10 @@ import org.springframework.util.Assert;
  * @since 7.0
  * @see OAuth2TokenExchangeCompositeAuthenticationToken
  */
-public final class OAuth2TokenExchangeActor implements ClaimAccessor {
+public final class OAuth2TokenExchangeActor implements ClaimAccessor, Serializable {
+
+	@Serial
+	private static final long serialVersionUID = -3966261411784615574L;
 
 	private final Map<String, Object> claims;
 

oauth2/oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/authentication/OAuth2TokenExchangeAuthenticationToken.java

@@ -16,6 +16,7 @@
 
 package org.springframework.security.oauth2.server.authorization.authentication;
 
+import java.io.Serial;
 import java.util.Collections;
 import java.util.HashSet;
 import java.util.LinkedHashSet;
@@ -38,6 +39,9 @@ import org.springframework.util.Assert;
  */
 public class OAuth2TokenExchangeAuthenticationToken extends OAuth2AuthorizationGrantAuthenticationToken {
 
+	@Serial
+	private static final long serialVersionUID = 2484741634669297785L;
+
 	private final String requestedTokenType;
 
 	private final String subjectToken;

oauth2/oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/authentication/OAuth2TokenExchangeCompositeAuthenticationToken.java

@@ -16,6 +16,7 @@
 
 package org.springframework.security.oauth2.server.authorization.authentication;
 
+import java.io.Serial;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
@@ -37,6 +38,9 @@ import org.springframework.util.Assert;
  */
 public class OAuth2TokenExchangeCompositeAuthenticationToken extends AbstractAuthenticationToken {
 
+	@Serial
+	private static final long serialVersionUID = 1912280308201180854L;
+
 	private final Authentication subject;
 
 	private final List<OAuth2TokenExchangeActor> actors;

oauth2/oauth2-authorization-server/src/main/java/org/springframework/security/oauth2/server/authorization/token/OAuth2AccessTokenGenerator.java

@@ -155,6 +155,7 @@ public final class OAuth2AccessTokenGenerator implements OAuth2TokenGenerator<OA
 		this.clock = clock;
 	}
 
+	@SuppressWarnings("serial")
 	private static final class OAuth2AccessTokenClaims extends OAuth2AccessToken implements ClaimAccessor {
 
 		private final Map<String, Object> claims;

oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/web/OAuth2AuthorizationRequestRedirectFilter.java

@@ -268,6 +268,7 @@ public class OAuth2AuthorizationRequestRedirectFilter extends OncePerRequestFilt
 
 	}
 
+	@SuppressWarnings("serial")
 	private static final class OAuth2AuthorizationRequestException extends AuthenticationException {
 
 		OAuth2AuthorizationRequestException(Throwable cause) {

oauth2/oauth2-core/src/test/java/org/springframework/security/oauth2/core/endpoint/TestOidcAuthorizationRequest.java

@@ -23,6 +23,7 @@ import org.springframework.security.oauth2.core.oidc.endpoint.OidcParameterNames
 /**
  * @author Joe Grandja
  */
+@SuppressWarnings("serial")
 public class TestOidcAuthorizationRequest extends OAuth2AuthorizationRequest {
 
 	private final String nonce;

oauth2/oauth2-jose/src/main/java/org/springframework/security/oauth2/jwt/DPoPProofJwtDecoderFactory.java

@@ -185,6 +185,7 @@ public final class DPoPProofJwtDecoderFactory implements JwtDecoderFactory<DPoPP
 			return Base64.getUrlEncoder().withoutPadding().encodeToString(digest);
 		}
 
+		@SuppressWarnings("serial")
 		private static final class JtiCache extends LinkedHashMap<String, Long> {
 
 			private static final int MAX_SIZE = 1000;

saml2/saml2-service-provider/src/main/java/org/springframework/security/saml2/provider/service/authentication/Saml2AuthenticationToken.java

@@ -16,6 +16,7 @@
 
 package org.springframework.security.saml2.provider.service.authentication;
 
+import java.io.Serial;
 import java.util.Collections;
 
 import org.jspecify.annotations.Nullable;
@@ -35,6 +36,9 @@ import org.springframework.util.Assert;
  */
 public class Saml2AuthenticationToken extends AbstractAuthenticationToken {
 
+	@Serial
+	private static final long serialVersionUID = 5225098478444036532L;
+
 	private final RelyingPartyRegistration relyingPartyRegistration;
 
 	private final String saml2Response;

web/src/test/java/org/springframework/security/web/authentication/DefaultEqualsGrantedAuthority.java

@@ -25,6 +25,7 @@ import org.springframework.security.core.GrantedAuthority;
  * @author Rob Winch
  * @since 7.0
  */
+@SuppressWarnings("serial")
 public class DefaultEqualsGrantedAuthority implements GrantedAuthority {
 
 	public static final String AUTHORITY = "CUSTOM_AUTHORITY";

webauthn/src/main/java/org/springframework/security/web/webauthn/api/AuthenticatorAttestationResponse.java

@@ -16,6 +16,7 @@
 
 package org.springframework.security.web.webauthn.api;
 
+import java.io.Serial;
 import java.util.Arrays;
 import java.util.List;
 
@@ -36,6 +37,9 @@ import org.jspecify.annotations.Nullable;
  */
 public final class AuthenticatorAttestationResponse extends AuthenticatorResponse {
 
+	@Serial
+	private static final long serialVersionUID = -1628559840895428945L;
+
 	private final Bytes attestationObject;
 
 	private final @Nullable List<AuthenticatorTransport> transports;