{"schema":"threatline.record/2","record":{"id":"CVE-2026-105646","aliases":["BIT-ghost-2026-105646","GHSA-fwh9-qg68-vxp4"],"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).","categories":["Applications & CMS"],"product":"ghost","vendor":"TryGhost","ecosystem":"npm","affected_ranges":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-fwh9-qg68-vxp4","source_modified_at":"2026-10-07T20:42:54Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"ghost"},"range":">= 4.0.0, < 6.67.0"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-105646","source_modified_at":"2026-10-07T21:41:48.865Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Ghost","vendor":"TryGhost","versions":[{"version":">= 4.0.0, < 6.67.0","status":"affected"}],"defaultStatus":null},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-fwh9-qg68-vxp4","source_modified_at":"2026-10-13T08:25:52.318807316Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"ghost","ecosystem":"npm","purl":"pkg:npm/ghost"},"ranges":[{"type":"SEMVER","events":[{"introduced":"4.0.0"},{"fixed":"6.67.0"}]}],"versions":[]}],"fixed_versions":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-fwh9-qg68-vxp4","source_modified_at":"2026-10-07T20:42:54Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"ghost"},"version":"6.67.0"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-fwh9-qg68-vxp4","source_modified_at":"2026-10-13T08:25:52.318807316Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"ghost","ecosystem":"npm","purl":"pkg:npm/ghost"},"version":"6.67.0"}],"cvss":4.9,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00327,"percentile":0.24545,"score_date":"2026-10-23"},"published_at":"2026-10-05T18:58:26.224Z","modified_at":"2026-10-13T08:25:52.318807316Z","provenance":[{"source":"GitHub Advisory Database","url":"https://github.com/advisories/GHSA-fwh9-qg68-vxp4","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-07T20:42:54Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-105646","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-07T21:41:48.865Z"},{"source":"OSV","url":"https://osv.dev/vulnerability/GHSA-fwh9-qg68-vxp4","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-13T08:25:52.318807316Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-105646","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["GitHub Advisory Database","CVE List","OSV","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/TryGhost/Ghost/security/advisories/GHSA-fwh9-qg68-vxp4","tags":["x_refsource_CONFIRM"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105646","source":"GitHub Advisory Database"},{"source":"CVE List","url":"https://github.com/TryGhost/Ghost/pull/31058","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/TryGhost/Ghost/commit/88ae6d6d56f8a239cb38a8c89de02f034f50e2ce","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/TryGhost/Ghost/releases/tag/v6.66.0","tags":["x_refsource_MISC"]},{"url":"https://github.com/advisories/GHSA-fwh9-qg68-vxp4","source":"GitHub Advisory Database"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-07T21:41:37.379990Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-13T08:25:52.318807316Z","content_hash":"0b4245e74512de3c0dbd4737b122860a132c305c509319476eb91ff6d9bfaba8"}}