CVE-2026-70594: Ghost: Session Fixation in Ghost Admin

Severity: medium (CVSS 6.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-04 · updated 2026-10-24
Weakness: CWE-384

Description

Ghost is a Node.js content management system. From 2.2.0 until 6.54.1, Ghost Admin did not invalidate existing sessions on login which could have allowed for session fixation attacks. Successful exploitation would have required another vulnerability on the same domain where Ghost Admin was hosted. This issue is fixed in version 6.54.1.

Affected products

TryGhost Ghost: from 2.2.0, < 6.54.1

References

https://github.com/TryGhost/Ghost/commit/6b1c85c30dd0bacb4d5ffe64fc675ac9342d800c
https://github.com/TryGhost/Ghost/pull/29634
https://github.com/TryGhost/Ghost/releases/tag/v6.54.1
https://github.com/TryGhost/Ghost/security/advisories/GHSA-7mpp-r37j-x5wh

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