{"id":"CVE-2026-103286","aliases":["BIT-ghost-2026-103286","EUVD-2026-90679","GHSA-pv24-pfvg-vr83","GHSA-wmw5-238j-rqvj"],"status":"published","title":"Ghost 2.21.0 before 6.56.0 Privilege Escalation via Notifications","description":"Ghost versions from 2.21.0 before 6.56.0 contain a privilege escalation vulnerability in the notifications system that allows low-privilege staff users to escalate to higher-privilege staff roles. Attackers with low-privilege staff access can exploit the notifications system to gain elevated privileges without proper authorization checks.","severity":{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00185,"percentile":0.08088,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-266"],"published":"2026-10-01T10:42:21Z","modified":"2026-10-28T02:31:13Z","fixes":[{"ecosystem":"Bitnami","package":"ghost","fixed_in":["6.56.0"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"ghost","ranges":[{"type":"SEMVER","events":[{"introduced":"2.21.0"},{"fixed":"6.56.0"}]}]}],"products":[{"vendor":"tryghost","product":"ghost"}],"references":[{"url":"https://github.com/TryGhost/Ghost/security/advisories/GHSA-pv24-pfvg-vr83","tags":["vendor-advisory","web","advisory"]},{"url":"https://www.vulncheck.com/advisories/ghost-2.21.0-before-6.56.0-privilege-escalation-via-notifications","tags":["third-party-advisory","web","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-103286","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-wmw5-238j-rqvj"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103286.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-103286","title":"Ghost 2.21.0 before 6.56.0 Privilege Escalation via Notifications","description":"Ghost versions from 2.21.0 before 6.56.0 contain a privilege escalation vulnerability in the notifications system that allows low-privilege staff users to escalate to higher-privilege staff roles. Attackers with low-privilege staff access can exploit the notifications system to gain elevated privileges without proper authorization checks.","status":"published","published":"2026-10-01T10:42:21.119Z","modified":"2026-10-01T15:30:38.273Z","cvss":[{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-266"],"updated_at":"2026-11-02T13:34:48.658051Z"}],"euvd":[{"id":"EUVD-2026-90679","description":"Ghost versions from 2.21.0 before 6.56.0 contain a privilege escalation vulnerability in the notifications system that allows low-privilege staff users to escalate to higher-privilege staff roles. Attackers with low-privilege staff access can exploit the notifications system to gain elevated privileges without proper authorization checks.","status":"published","published":"2026-10-01T10:42:21Z","modified":"2026-10-01T15:30:38Z","cvss":[{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T17:27:44.672309Z"}],"ghsa":[{"id":"GHSA-wmw5-238j-rqvj","title":"Ghost versions from 2.21.0 before 6.56.0 contain a privilege escalation vulnerability in the...","description":"Ghost versions from 2.21.0 before 6.56.0 contain a privilege escalation vulnerability in the notifications system that allows low-privilege staff users to escalate to higher-privilege staff roles. Attackers with low-privilege staff access can exploit the notifications system to gain elevated privileges without proper authorization checks.","status":"published","published":"2026-10-01T12:31:18Z","modified":"2026-10-01T12:31:24Z","cvss":[{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-266"],"updated_at":"2026-11-02T15:12:40.571849Z"}],"nvd":[{"id":"CVE-2026-103286","description":"Ghost versions from 2.21.0 before 6.56.0 contain a privilege escalation vulnerability in the notifications system that allows low-privilege staff users to escalate to higher-privilege staff roles. Attackers with low-privilege staff access can exploit the notifications system to gain elevated privileges without proper authorization checks.","status":"published","published":"2026-10-01T11:17:24.88Z","modified":"2026-10-01T16:17:35.88Z","cvss":[{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-266"],"updated_at":"2026-11-02T14:12:53.097633Z"}],"osv":[{"id":"CVE-2026-103286","title":"Ghost 2.21.0 before 6.56.0 Privilege Escalation via Notifications","description":"Ghost versions from 2.21.0 before 6.56.0 contain a privilege escalation vulnerability in the notifications system that allows low-privilege staff users to escalate to higher-privilege staff roles. Attackers with low-privilege staff access can exploit the notifications system to gain elevated privileges without proper authorization checks.","status":"published","published":"2026-10-01T10:42:21.119Z","modified":"2026-10-28T02:31:13.652921429Z","cvss":[{"version":"4.0","score":8.5,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-266"],"updated_at":"2026-11-02T15:44:54.236592Z"},{"id":"BIT-ghost-2026-103286","title":"Ghost 2.21.0 before 6.56.0 Privilege Escalation via Notifications","description":"Ghost versions from 2.21.0 before 6.56.0 contain a privilege escalation vulnerability in the notifications system that allows low-privilege staff users to escalate to higher-privilege staff roles. Attackers with low-privilege staff access can exploit the notifications system to gain elevated privileges without proper authorization checks.","status":"published","published":"2026-10-09T10:45:05.579Z","modified":"2026-10-09T12:10:29.61673326Z","updated_at":"2026-11-02T15:28:29.999658Z"}]}}