{"id":"CVE-2026-70596","title":"Ghost is a Node.js content management system","summary":"Ghost is a Node.js content management system. From 4.9.0 until 6.54.1, an input validation issue allowed any staff user to create a post with content in feature_image_caption that could be used to hijack another staff user's Ghost Admin …","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L","cwe":["CWE-79"],"vendor":"ghost","product":"ghost","affected":["ghost >= 4.9.0, < 6.54.1"],"patched":["ghost 6.54.1"],"published":"2026-08-05","updated":"2026-09-08","sourceUpdated":"2026-09-08T20:51:43.490","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-70596","references":[{"url":"https://github.com/TryGhost/Ghost/commit/a8bea3a4ceec4c852b880f4885119453c3d8588e","label":"security-advisories@github.com"},{"url":"https://github.com/TryGhost/Ghost/pull/29635","label":"security-advisories@github.com"},{"url":"https://github.com/TryGhost/Ghost/releases/tag/v6.54.1","label":"security-advisories@github.com"},{"url":"https://github.com/TryGhost/Ghost/security/advisories/GHSA-pr22-p9rp-2cqv","label":"security-advisories@github.com"},{"url":"https://github.com/advisories/GHSA-pr22-p9rp-2cqv"}],"tags":["nvd","ghsa","npm"],"epss":0.0018,"epssPercentile":0.07765,"aliases":["GHSA-pr22-p9rp-2cqv"],"ecosystem":"npm","ingestedAt":"2026-08-05T14:48:44.215Z","slug":"CVE-2026-70596","body":"## Overview\n\nGhost is a Node.js content management system. From 4.9.0 until 6.54.1, an input validation issue allowed any staff user to create a post with content in feature_image_caption that could be used to hijack another staff user's Ghost Admin session, resulting in privilege escalation. This issue is fixed in 6.54.1.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-70596)\n\nAffected packages:\n\n- `ghost >= 4.9.0, < 6.54.1`\n\nPatched in:\n\n- `ghost 6.54.1`\n\nSource: https://github.com/advisories/GHSA-pr22-p9rp-2cqv","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}