{"id":"CVE-2026-105646","aliases":["BIT-ghost-2026-105646","GHSA-fwh9-qg68-vxp4"],"url":"https://o3.security/vulnerability/CVE-2026-105646","summary":"Ghost: Regular Expression Denial of Service in Content Import","details":"### Impact\n\nA crafted content import file could cause excessive CPU usage, making the Ghost server unresponsive. Exploiting this requires Administrator access.\n\n### Vulnerable versions\n\nThis vulnerability is present in Ghost from v4.0.0 up to v6.65.0.\n\n### Patches\n\nv6.67.0 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 [ka3n1x](https://github.com/ka3n1x) 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":"2026-10-05T18:58:26.224Z","modified":"2026-10-21T02:54:33.424901220Z","cvss":{"score":4.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"npm","name":"ghost","fixedVersion":"6.67.0"}],"fix":{"url":"https://github.com/TryGhost/Ghost/commit/88ae6d6d56f8a239cb38a8c89de02f034f50e2ce","label":"TryGhost/Ghost@88ae6d6"},"references":[{"type":"WEB","url":"https://github.com/TryGhost/Ghost/releases/tag/v6.66.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/105xxx/CVE-2026-105646.json"},{"type":"ADVISORY","url":"https://github.com/TryGhost/Ghost/security/advisories/GHSA-fwh9-qg68-vxp4"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105646"},{"type":"FIX","url":"https://github.com/TryGhost/Ghost/commit/88ae6d6d56f8a239cb38a8c89de02f034f50e2ce"},{"type":"FIX","url":"https://github.com/TryGhost/Ghost/pull/31058"},{"type":"PACKAGE","url":"https://github.com/TryGhost/Ghost"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-21T02:54:33.424901220Z"}}