A session handling bug allowed any authenticated staff user to log in as any other staff user with the password only, bypassing 2FA.
This vulnerability is present in Ghost from v6.20.0 up to v6.57.1.
v6.57.1 contains a fix for this issue.
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 .
We thank Jaeyoon Kim and doanmanhducz for disclosing this vulnerability responsibly.
If you have any questions or this advisory, email us at [email protected] .
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