CVE-2026-70595 Ghost: Server-Side Request Forgery Mitigation Issue
Unauthenticated attackers can bypass SSRF protections to make limited internal HTTP requests via Webmentions, though no data is returned.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-70595?
CVE-2026-70595 is a medium-severity server-side request forgery vulnerability in TryGhost Ghost, published on 5 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Ghost is a Node.js content management system. From 6.26.0 until 6.54.1, a validation issue allowed some functionality, such as Webmentions, to be abused by an unauthenticated user to make limited HTTP requests to hosts in the Ghost server's internal network. A successful attack would not result in any response data being returned. This vulnerability is fixed in 6.54.1.
Weakness: CWE-918
Which versions are affected by CVE-2026-70595?
3 open source packages ship an affected version, including ghost.
| Package | Affected | Fixed in |
|---|---|---|
ghost Bitnami | From 6.26.0 | 6.54.1 |
ghost npm | From 6.26.0 | 6.54.1 |
ghost npm | From 6.26.0 | 6.54.1 |
How do I fix CVE-2026-70595?
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-2026-70595 being exploited?
There is no known exploitation of CVE-2026-70595 in the wild and no public exploit code.
Sources
Also known as BIT-ghost-2026-70595, GHSA-x5mm-wm4g-j5xv.