Server-Side Request Forgery (SSRF) in Ghost - CVE-2026-53945
Published: July 30, 2026
Vulnerability identifier: #VU140536
CSH Severity: Low
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:N/SA:N]
CVE-ID: CVE-2026-53945
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to access internal network hosts.
The vulnerability exists due to server-side request forgery in external request handling when issuing outbound HTTP requests. A remote attacker can supply a URL that leverages DNS rebinding to access internal network hosts.
The issue arises from a bypass of the private-IP check for outbound requests through features that issue external fetches.
Affected software
Ghost
How to mitigate CVE-2026-53945
Install security update from vendor's website.
Ghost - update to 6.21.1