{"id":"CVE-2026-70588","aliases":["BIT-ghost-2026-70588","GHSA-2gx6-7gx2-wwcf"],"url":"https://o3.security/vulnerability/CVE-2026-70588","summary":"Ghost: Cross-Site Scripting in Universal Import","details":"### Impact\n\nThe Universal Import feature in Ghost Admin failed to properly sanitize imported content resulting in XSS in post content.\n\n### Vulnerable versions\n\nThis vulnerability is present in Ghost from v5.26.0 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### Workarounds\n\nIf upgrading immediately is not possible, avoid using the Universal Import feature.\n\n### References\n\nGhost thanks meifukun 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":"2026-08-04T21:03:42.379Z","modified":"2026-10-28T02:30:38.225079461Z","cvss":{"score":5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:L"},"epss":{"score":0.00258,"percentile":0.17702,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"ghost","fixedVersion":"6.54.1"}],"fix":{"url":"https://github.com/TryGhost/Ghost/commit/a8bea3a4ceec4c852b880f4885119453c3d8588e","label":"TryGhost/Ghost@a8bea3a"},"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-2026-70588.json"},{"type":"ADVISORY","url":"https://github.com/TryGhost/Ghost/security/advisories/GHSA-2gx6-7gx2-wwcf"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70588"},{"type":"FIX","url":"https://github.com/TryGhost/Ghost/commit/a8bea3a4ceec4c852b880f4885119453c3d8588e"},{"type":"FIX","url":"https://github.com/TryGhost/Ghost/pull/29635"},{"type":"PACKAGE","url":"https://github.com/TryGhost/Ghost"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-28T02:30:38.225079461Z"}}