{"schema_version":"1.9.0","id":"GHSA-69qc-f5m6-889c","published":"2026-10-07T20:43:05Z","modified":"2026-10-07T21:00:04.349185862Z","aliases":["CVE-2026-105643"],"related":["CVE-2026-105643"],"summary":"Ghost: Stored XSS via Embed Card Previews","details":"### Impact\n\nEmbed cards in the Ghost editor could be used to bypass the fix for GHSA-8vhf-xxpj-4qrg. Any staff user, including Contributors, could store scripts in post content that ran when another staff user opened the post in the editor, possibly resulting in compromise of that user's admin session.\n\nSelf-hosted sites should leave the new `security.embedPreviewUrl` config option at its default. \n\n### Vulnerable versions\n\nThis vulnerability is present in Ghost from v6.34.0 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 [DONG2209 (Dong Nguyen)](https://github.com/DONG2209) and 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).","affected":[{"package":{"name":"ghost","ecosystem":"npm","purl":"pkg:npm/ghost"},"ranges":[{"type":"SEMVER","events":[{"introduced":"6.34.0"},{"fixed":"6.67.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-69qc-f5m6-889c/GHSA-69qc-f5m6-889c.json"}}],"references":[{"type":"WEB","url":"https://github.com/TryGhost/Ghost/security/advisories/GHSA-69qc-f5m6-889c"},{"type":"WEB","url":"https://github.com/penpot/penpot/security/advisories/GHSA-qvq5-c536-pmx8"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105643"},{"type":"PACKAGE","url":"https://github.com/TryGhost/Ghost"}],"database_specific":{"cwe_ids":["CWE-653","CWE-79"],"github_reviewed":true,"github_reviewed_at":"2026-10-07T20:43:05Z","nvd_published_at":"2026-10-05T19:17:18Z","severity":"HIGH"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N"}]}