{"id":"CVE-2026-105643","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-105643","generatedAt":"2026-10-28T03:58:21.509Z","title":"From version 6.34.0 until 6.67.0, embed cards in the Ghost editor could bypass protections against stored cross-site scripting.","description":"Ghost is a Node.js content management system. From version 6.34.0 until 6.67.0, embed cards in the Ghost editor could bypass protections against stored cross-site scripting. Any staff user, including Contributors, could store scripts in post content that ran when another staff user opened the post in the editor, potentially compromising that user’s admin session. Self-hosted sites should leave the new  security.embedPreviewUrl  configuration option at its default value. This issue is fixed in version 6.67.0.","published":"2026-10-05T19:17:19.000Z","lastModified":"2026-10-06T17:17:18.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":7.3,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N"},"cwe":["CWE-79","CWE-653"],"affected":[],"epss":{"score":0.00277,"percentile":0.20017,"date":"2026-10-27","history":[{"date":"2026-10-06","score":0.00261,"percentile":0.16312}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.28%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-05T19:17:19.000Z","detail":{"score":"7.3","severity":"HIGH","publishedAt":"2026-10-05T19:17:18.900Z"},"summary":"New CVE, high severity (CVSS 7.3)."}],"references":[{"url":"https://github.com/TryGhost/Ghost/security/advisories/GHSA-69qc-f5m6-889c","source":"security-advisories@github.com"},{"url":"https://github.com/penpot/penpot/security/advisories/GHSA-qvq5-c536-pmx8","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-105643","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}