Ghost: Path Traversal via Locale Setting

Impact

A vulnerability in how Ghost loads theme translation files allowed an authenticated Administrator to read JSON files outside of the active theme's directory, potentially exposing server configuration secrets.

Vulnerable versions

This vulnerability is present in Ghost from v1.20.0 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 Miguel Segovia Gil of KPMG and Nguyễn Quốc Đồng for disclosing this vulnerability responsibly.

For more information

If you have any questions or comments about this advisory, email us at [email protected].