{"id":"CVE-2026-70590","aliases":["BIT-ghost-2026-70590","GHSA-jm22-3w23-5q7w"],"url":"https://o3.security/vulnerability/CVE-2026-70590","summary":"Ghost: Blind Password Hash Disclosure in Ghost Admin API","details":"### Impact\n\nAny staff-level user was able to leak the hashed passwords of other staff users. An offline password-guessing attack against the hashes could lead to account takeover if successful, but [Device Verification](https://docs.ghost.org/security#device-verification) should have prevented an attacker from logging in with a recovered password. Depending on the database used, leaked hashes may not have had the correct casing for all characters, increasing the difficulty of a password-guessing attack.\n\n### Vulnerable versions\n\nThis vulnerability is present in Ghost versions v6.54.0 and earlier.\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### Workarounds\n\nIf upgrading immediately is not possible, ensure all staff users have [Multi-factor Authentication](https://docs.ghost.org/security#email-2fa) (MFA) enabled. This will help prevent an attacker from logging in with any passwords that are successfully recovered from the leaked hashes.\n\n### References\n\nGhost thanks Chapman Schleiss 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).","published":"2026-08-04T21:27:22.823Z","modified":"2026-10-28T02:30:28.214932749Z","cvss":{"score":4.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:H/A:N"},"epss":{"score":0.00195,"percentile":0.095,"asOf":"2026-08-16"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"ghost","fixedVersion":"6.54.1"}],"fix":{"url":"https://github.com/TryGhost/Ghost/commit/63c31fad7e473caa62d8fbb4651a04a2a62b5d00","label":"TryGhost/Ghost@63c31fa"},"references":[{"type":"WEB","url":"https://github.com/TryGhost/Ghost/releases/tag/v6.54.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70590.json"},{"type":"ADVISORY","url":"https://github.com/TryGhost/Ghost/security/advisories/GHSA-jm22-3w23-5q7w"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70590"},{"type":"FIX","url":"https://github.com/TryGhost/Ghost/commit/63c31fad7e473caa62d8fbb4651a04a2a62b5d00"},{"type":"FIX","url":"https://github.com/TryGhost/Ghost/pull/29628"},{"type":"PACKAGE","url":"https://github.com/TryGhost/Ghost"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-28T02:30:28.214932749Z"}}