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If the GrantedAuthority is not equal, but contains a duplicate GrantedAuthority#getAuthority() then at the time of authentication, the Filter or WebFilter will duplicate the GrantedAuthority which leads to a memory leak. This is important to avoid for when we add support for a GrantedAuthority that might have an issuedAt attribute. If it is too old, then we'd want only the new GrantedAuthority to be added and the old instance to be removed. However, the two GrantedAuthority instances will not be equal because the issuedAt will not be equal. Closes gh-17981
image::https://badges.gitter.im/Join%20Chat.svg[Gitter,link=https://gitter.im/spring-projects/spring-security?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge] image:https://github.com/spring-projects/spring-security/actions/workflows/continuous-integration-workflow.yml/badge.svg?branch=main["Build Status", link="https://github.com/spring-projects/spring-security/actions/workflows/continuous-integration-workflow.yml"] image:https://img.shields.io/badge/Revved%20up%20by-Develocity-06A0CE?logo=Gradle&labelColor=02303A["Revved up by Develocity", link="https://ge.spring.io/scans?search.rootProjectNames=spring-security"] = Spring Security Spring Security provides security services for the https://docs.spring.io[Spring IO Platform]. Spring Security 6.0 requires Spring 6.0 as a minimum and also requires Java 17. For a detailed list of features and access to the latest release, please visit https://spring.io/projects[Spring projects]. == Code of Conduct Please see our https://github.com/spring-projects/.github/blob/main/CODE_OF_CONDUCT.md[code of conduct] == Downloading Artifacts See https://docs.spring.io/spring-security/reference/getting-spring-security.html[Getting Spring Security] for how to obtain Spring Security. == Documentation Be sure to read the https://docs.spring.io/spring-security/reference/[Spring Security Reference]. Extensive JavaDoc for the Spring Security code is also available in the https://docs.spring.io/spring-security/site/docs/current/api/[Spring Security API Documentation]. You may also want to check out https://docs.spring.io/spring-security/reference/whats-new.html[what's new in the latest release]. == Quick Start See https://docs.spring.io/spring-security/reference/servlet/getting-started.html[Hello Spring Security] to get started with a "Hello, World" application. == Building from Source Spring Security uses a https://gradle.org[Gradle]-based build system. In the instructions below, https://vimeo.com/34436402[`./gradlew`] is invoked from the root of the source tree and serves as a cross-platform, self-contained bootstrap mechanism for the build. === Prerequisites https://docs.github.com/en/get-started/quickstart/set-up-git[Git] and the https://www.oracle.com/java/technologies/downloads/#java17[JDK17 build]. Be sure that your `JAVA_HOME` environment variable points to the `jdk-17` folder extracted from the JDK download. === Check out sources [indent=0] ---- git clone git@github.com:spring-projects/spring-security.git ---- === Install all `spring-*.jar` into your local Maven repository. [indent=0] ---- ./gradlew publishToMavenLocal ---- === Compile and test; build all JARs, distribution zips, and docs [indent=0] ---- ./gradlew build ---- The reference docs are not currently included in the distribution zip. You can build the reference docs for this branch by running the following command: ---- ./gradlew :spring-security-docs:antora ---- That command publishes the docs site to the `_docs/build/site_` directory. The https://github.com/spring-projects/spring-security/tree/docs-build[playbook branch] describes how to build the reference docs in detail. Discover more commands with `./gradlew tasks`. == Getting Support Check out the https://stackoverflow.com/questions/tagged/spring-security[Spring Security tags on Stack Overflow]. https://spring.io/support[Commercial support] is available too. == Contributing https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/creating-a-pull-request[Pull requests] are welcome; see the https://github.com/spring-projects/spring-security/blob/main/CONTRIBUTING.adoc[contributor guidelines] for details. == License Spring Security is Open Source software released under the https://www.apache.org/licenses/LICENSE-2.0.html[Apache 2.0 license].