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GHSA-9m4w-fmjw-fvjq

Ghost: Regular Expression Denial of Service in External Media Inliner

Source: GitHub Advisory Database (reviewed) Moderate CVE-2026-105645

Packages

EcosystemPackageAffectedFixed in
npm ghost >= 5.37.0, < 6.67.0 6.67.0

Details

As written in the advisory (Markdown source, shown as plain text).

### 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](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 [ka3n1x](https://github.com/ka3n1x) 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]).

References

External links from the advisory. They lead to third-party sites.