{"id":"CVE-2026-103273","aliases":["BIT-ghost-2026-103273","EUVD-2026-90666","GHSA-3qxh-9f4j-4rwp","GHSA-jj85-wvj2-r86m"],"status":"published","title":"Ghost 4.3.0 before 6.58.0 Incorrect Authorization via Staff Token","description":"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 posts beyond their assigned privilege level.","severity":{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00257,"percentile":0.17548,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-863"],"published":"2026-10-01T10:42:11Z","modified":"2026-10-28T02:30:23Z","fixes":[{"ecosystem":"Bitnami","package":"ghost","fixed_in":["6.58.0"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"ghost","ranges":[{"type":"SEMVER","events":[{"introduced":"4.3.0"},{"fixed":"6.58.0"}]}]}],"products":[{"vendor":"tryghost","product":"ghost"}],"references":[{"url":"https://github.com/TryGhost/Ghost/security/advisories/GHSA-jj85-wvj2-r86m","tags":["vendor-advisory","web","advisory"]},{"url":"https://www.vulncheck.com/advisories/ghost-4.3.0-before-6.58.0-incorrect-authorization-via-staff-token","tags":["third-party-advisory","web","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-103273","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-3qxh-9f4j-4rwp"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103273.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-103273","title":"Ghost 4.3.0 before 6.58.0 Incorrect Authorization via Staff Token","description":"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. 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