Server-Side Request Forgery (SSRF) in Ghost - CVE-2026-70591
Published: July 30, 2026
Vulnerability identifier: #VU140551
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N]
CVE-ID: CVE-2026-70591
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to perform blind HTTP requests against internal hosts.
The vulnerability exists due to server-side request forgery in the image fetching functionality when processing image fetch requests. A remote privileged user can supply a crafted image URL to perform blind HTTP requests against internal hosts.
This issue could be used to probe open ports on internal hosts.
Affected software
Ghost
How to mitigate CVE-2026-70591
Install security update from vendor's website.
Ghost - update to 6.54.1