CVE-2026-105678

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. Updating a Docker-based Ghost instance is documented here.

If your Ghost is a Ghost-CLI install see our documentation on updating it to the latest version here.

References

Ghost thanks SecBuddyF of Tencent KeenLab, Santosh Kumar Puppala, Pedro Pinho, and Nhat Anh Vu for disclosing this vulnerability responsibly.

For more information

If you have any questions or comments about this advisory, email us at security@ghost.org.