All vulnerabilities
CVE-2026-103283GHSA-q55r-w7fh-rmh6

Ghost 6.20.0 before 6.57.1 Authentication Bypass via Session Handling

TryGhost GhostApplications & CMS
Open in ThreatlineRecord JSON
CVSS
8.6High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.27%Chance of exploitation activity in the next 30 days, higher than 18% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in6.57.1Fixed versionCVE List
Published1 Oct 2026Updated 6 Oct 2026CVE List

What fixes it

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 6.20.0 before 6.57.1 contain a session handling vulnerability that allows authenticated staff users to log in as any other staff user with only the password, bypassing two-factor authentication. Attackers with valid staff credentials can exploit improper session management to impersonate other staff members and gain unauthorized access to administrative functions.

Text from CVE List

Affected versions 1

  • Ghostaffected: 6.20.0 before 6.57.1CVE List

References 2