GHSA-9m4w-fmjw-fvjq Ghost: Regular Expression Denial of Service in External Media Inliner

• npm ghost: >= 5.37.0, < 6.67.0 → fixed in 6.67.0

Impact A crafted request to the external media inliner could cause excessive CPU usage, making the Ghost server unresponsive. Exploiting this requires Administrator access. Vulnerable versions This vulnerability is present in Ghost from v5.37.0 up to v6.65.0. Patches v6.67.0 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 ka3n1x for disclosing this vulnerability responsibly. For more information If you have any questions or comments about this advisory, email us at [email protected].