GHSA-4pvx-fwjj-8gpc

### Impact Staff users with the Editor or Super Editor role were able to assign their own role to Author and Contributor users, despite not having permission to assign that role. ### Vulnerable versions This vulnerability is present in Ghost from v0.5.0 up to v6.64.0. ### Patches v6.64.0 contains a fix for this issue. ### How to update For self-hosters using Docker, find [Docker's official Ghost image here](https://hub.docker.com/_/ghost). Updating a Docker-based Ghost instance [is documented here](https://docs.ghost.org/install/docker#updating-ghost). If your Ghost is a Ghost-CLI install see our documentation on [updating it to the latest version here](https://docs.ghost.org/update). ### References Ghost thanks [SecBuddyF](https://github.com/SecBuddyF) of [Tencent KeenLab](https://github.com/KeenSecurityLab), [Santosh Kumar Puppala](https://github.com/Santoshkumarpuppala), Pedro Pinho, and [Nhat Anh Vu](https://github.com/nhattanhh) for disclosing this vulnerability responsibly. ### For more information If you have any questions or comments about this advisory, email us at [[email protected]](mailto:[email protected]).