{"id":"CVE-2026-103273","title":"Ghost versions 4.3.0 before 6.58.0 contain an authentication bypass vulnerability where lower-privilege staff users can use staff tokens to bypass post editing restrictions","summary":"Ghost versions 4.3.0 before 6.58.0 contain an authentication bypass vulnerability where lower-privilege staff users can use staff tokens to bypass post editing restrictions. Attackers with staff credentials can leverage tokens to edit po…","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","cwe":["CWE-863"],"vendor":"TryGhost","product":"Ghost","affected":["Ghost >= 4.3.0 < 6.58.0"],"published":"2026-10-01","updated":"2026-10-01","sourceUpdated":"2026-10-01T11:17:22.730","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-103273","references":[{"url":"https://github.com/TryGhost/Ghost/security/advisories/GHSA-jj85-wvj2-r86m","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/ghost-4.3.0-before-6.58.0-incorrect-authorization-via-staff-token","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-01T11:42:53.808Z","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-01T13:33:41.482510Z"},"slug":"CVE-2026-103273","body":"## Overview\n\nGhost versions 4.3.0 before 6.58.0 contain an authentication bypass vulnerability where lower-privilege staff users can use staff tokens to bypass post editing restrictions. Attackers with staff credentials can leverage tokens to edit posts beyond their assigned privilege level.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}