CVE-2026-70591 Ghost: Server-Side Request Forgery in Image Fetching
Staff users can perform blind HTTP GET requests to internal hosts via image fetching, enabling internal network probing.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-70591?
CVE-2026-70591 is a medium-severity server-side request forgery vulnerability in TryGhost Ghost, published on 4 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Ghost is a Node.js content management system. From 0.10.0 until 6.54.1, a Server-Side Request Forgery in Ghost Admin image fetching allowed any staff-level user to perform a blind HTTP GET request against internal hosts. No output was returned, but this could have been used to probe open ports on internal hosts. This issue is fixed in version 6.54.1.
Weakness: CWE-918
Which versions are affected by CVE-2026-70591?
3 open source packages ship an affected version, including ghost.
| Package | Affected | Fixed in |
|---|---|---|
ghost Bitnami | From 0.10.0 | 6.54.1 |
ghost npm | From 0.10.0 | 6.54.1 |
ghost npm | From 0.10.0 | 6.54.1 |
How do I fix CVE-2026-70591?
Upgrade ghost to 6.54.1 or later.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-70591 being exploited?
There is no known exploitation of CVE-2026-70591 in the wild and no public exploit code.
Sources
Also known as BIT-ghost-2026-70591, GHSA-gcvv-72q8-9v76.