{"id":"CVE-2026-70593","title":"Ghost is a Node.js content management system","summary":"Ghost is a Node.js content management system. From 0.10.0 until 6.54.1, a vulnerability in custom themes allowed a staff user to write files outside of the uploads directory. This could be used to alter the behavior of the installation t…","severity":"medium","cvss":6.6,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:L","cwe":["CWE-22"],"vendor":"ghost","product":"ghost","affected":["ghost >= 0.10.0, < 6.54.1"],"patched":["ghost 6.54.1"],"published":"2026-08-04","updated":"2026-09-08","sourceUpdated":"2026-09-08T20:51:43.490","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-70593","references":[{"url":"https://github.com/TryGhost/Ghost/commit/fbaa92327e52607036a1e42204c9eadcc751d82c","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-cjc9-q5gf-327p","label":"security-advisories@github.com"},{"url":"https://github.com/advisories/GHSA-cjc9-q5gf-327p"}],"tags":["nvd","ghsa","npm"],"epss":0.0029,"epssPercentile":0.21757,"aliases":["GHSA-cjc9-q5gf-327p"],"ecosystem":"npm","ingestedAt":"2026-08-04T22:42:37.973Z","slug":"CVE-2026-70593","body":"## Overview\n\nGhost is a Node.js content management system. From 0.10.0 until 6.54.1, a vulnerability in custom themes allowed a staff user to write files outside of the uploads directory. This could be used to alter the behavior of the installation through custom theme upload path traversal in LocalStorageBase and theme storage name handling. This issue is fixed in version 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-2026-70593)\n\nAffected packages:\n\n- `ghost >= 0.10.0, < 6.54.1`\n\nPatched in:\n\n- `ghost 6.54.1`\n\nSource: https://github.com/advisories/GHSA-cjc9-q5gf-327p","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":36.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}