Session Invalidation Bypass in Ghost by TryGhost
CVE-2026-103279

7.6HIGH

Key Information:

Vendor

Tryghost

Status
Ghost
Vendor
CVE Published:
1 October 2026

What is CVE-2026-103279?

Ghost versions prior to 6.34.0 do not adequately invalidate all user sessions upon a password change. As a result, an attacker with access to a compromised session cookie can retain unauthorized access to user accounts, undermining the effectiveness of password security measures. This flaw poses a significant risk for users who may believe that changing their password adequately secures their account, only to discover that their sessions have not been properly terminated.

Affected Version(s)

Ghost 3.10.0 < 6.34.0

Ghost 6.34.0

References

https://github.com/TryGhost/Ghost/security/advisories/GHS...
vendor-advisory
https://www.vulncheck.com/advisories/ghost-3.10.0-before-...
third-party-advisory

CVSS V4

Score:
7.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.