GHSA-4wx2-7gvj-qfq3 Ghost: Archived Offers can be Redeemed

• npm ghost: >= 4.22.0, < 6.54.1 → fixed in 6.54.1

Impact A missing validation check allowed users to redeem subscription offers that were no longer active. Vulnerable versions This vulnerability is present in Ghost from v4.22.0 up to v6.54.0. Patches v6.54.1 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 Pedro Pinho for disclosing this vulnerability responsibly. For more information If you have any questions or comments about this advisory, email us at [email protected].