CVE-2026-70594 Ghost: Session Fixation in Ghost Admin
Attackers can hijack user sessions in Ghost Admin if another vulnerability exists on the same domain, requiring an upgrade to fix.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-70594?
CVE-2026-70594 is a medium-severity authentication bypass vulnerability in TryGhost Ghost, published on 4 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-384
Which versions are affected by CVE-2026-70594?
3 open source packages ship an affected version, including ghost.
| Package | Affected | Fixed in |
|---|---|---|
ghost Bitnami | From 2.2.0 | 6.54.1 |
ghost npm | From 2.2.0 | 6.54.1 |
ghost npm | From 2.2.0 | 6.54.1 |
How do I fix CVE-2026-70594?
Upgrade ghost to 6.54.1 or later.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-70594 being exploited?
There is no known exploitation of CVE-2026-70594 in the wild and no public exploit code.
Sources
Also known as BIT-ghost-2026-70594, GHSA-7mpp-r37j-x5wh.