{"id":"CVE-2026-103277","title":"Ghost versions from 2.5.0 before 6.34.0 contain an untrusted script execution vulnerability in the oEmbed preview feature that fails to sandbox externally hosted scripts","summary":"Ghost versions from 2.5.0 before 6.34.0 contain an untrusted script execution vulnerability in the oEmbed preview feature that fails to sandbox externally hosted scripts. Attackers can craft malicious oEmbed content to execute scripts in…","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","cwe":["CWE-79"],"vendor":"TryGhost","product":"Ghost","affected":["Ghost >= 2.5.0 < 6.34.0"],"published":"2026-10-01","updated":"2026-10-01","sourceUpdated":"2026-10-01T11:17:23.403","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-103277","references":[{"url":"https://github.com/TryGhost/Ghost/security/advisories/GHSA-8vhf-xxpj-4qrg","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/ghost-2.5.0-before-6.34.0-untrusted-script-execution-via-oembed","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-01T11:42:53.810Z","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-01T13:34:51.106508Z"},"slug":"CVE-2026-103277","body":"## Overview\n\nGhost versions from 2.5.0 before 6.34.0 contain an untrusted script execution vulnerability in the oEmbed preview feature that fails to sandbox externally hosted scripts. Attackers can craft malicious oEmbed content to execute scripts in the context of a staff user's admin session, potentially compromising administrative access.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}