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

August 5, 2026

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.

References

github.com/TryGhost/Ghost/security/advisories/GHSA-x5mm-wm4g-j5xv
github.com/advisories/GHSA-x5mm-wm4g-j5xv
nvd.nist.gov/vuln/detail/CVE-2026-70595

Code Behaviors & Features

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