{"id":"GHSA-4wx2-7gvj-qfq3","summary":"Ghost: Archived Offers can be Redeemed","details":"### Impact\n\nA missing validation check allowed users to redeem subscription offers that were no longer active.\n\n### Vulnerable versions\n\nThis vulnerability is present in Ghost from v4.22.0 up to v6.54.0.\n\n### Patches\n\nv6.54.1 contains a fix for this issue.\n\n### How to update\n\nFor 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). \n\nIf your Ghost is a Ghost-CLI install see our documentation on [updating it to the latest version here](https://docs.ghost.org/update). \n\n### References\n\nGhost thanks Pedro Pinho for disclosing this vulnerability responsibly.\n\n### For more information\n\nIf you have any questions or comments about this advisory, email us at [security@ghost.org](mailto:security@ghost.org).","aliases":["BIT-ghost-2026-70589","CVE-2026-70589"],"modified":"2026-08-17T08:10:34.514082209Z","published":"2026-08-04T21:11:12Z","database_specific":{"github_reviewed_at":"2026-08-04T21:11:12Z","nvd_published_at":null,"cwe_ids":["CWE-20"],"severity":"MODERATE","github_reviewed":true},"references":[{"type":"WEB","url":"https://github.com/TryGhost/Ghost/security/advisories/GHSA-4wx2-7gvj-qfq3"},{"type":"WEB","url":"https://github.com/TryGhost/Ghost/commit/d91c0fc52dfc987d71a9803dbcbe6447d21b92fb"},{"type":"PACKAGE","url":"https://github.com/TryGhost/Ghost"}],"affected":[{"package":{"name":"ghost","ecosystem":"npm","purl":"pkg:npm/ghost"},"ranges":[{"type":"SEMVER","events":[{"introduced":"4.22.0"},{"fixed":"6.54.1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-4wx2-7gvj-qfq3/GHSA-4wx2-7gvj-qfq3.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N"}]}