CVE-2026-70595: Ghost: Server-Side Request Forgery Mitigation Issue

Severity: medium (CVSS 4.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-05 · updated 2026-10-24
Weakness: CWE-918

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.

Affected products

TryGhost Ghost: from 6.26.0, < 6.54.1

References

https://github.com/TryGhost/Ghost/security/advisories/GHSA-x5mm-wm4g-j5xv

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