CVE-2026-103273GHSA-jj85-wvj2-r86m
Ghost 4.3.0 before 6.58.0 Incorrect Authorization via Staff Token
TryGhost GhostApplications & CMS
CVSS
5.3MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.26%Chance of exploitation activity in the next 30 days, higher than 16% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 6.58.0GhostCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
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.
Text from CVE List
Affected versions 2
- Ghostaffected: 4.3.0 before 6.58.0CVE List
- Ghostunaffected: 6.58.0CVE List