Server-Side Request Forgery (SSRF) in NukeViet - CVE-2026-55372
Published: July 24, 2026
Vulnerability identifier: #VU139332
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:N/SA:N]
CVE-ID: CVE-2026-55372
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to coerce the server into issuing HTTP requests to an attacker-chosen host and poison cached response headers.
The vulnerability exists due to server-side request forgery (SSRF) in server_info_update() and forwarded-header handling when processing a POST request with the __serverInfoUpdate=1 field and spoofed X-Forwarded-Host and X-Forwarded-Proto headers. A remote attacker can send a specially crafted request to coerce the server into issuing HTTP requests to an attacker-chosen host and poison cached response headers.
The issue is reachable before authentication, and the SSRF is blind, HEAD-only, and limited to a fixed request path.
Affected software
NukeViet
How to mitigate CVE-2026-55372
Install security update from vendor's website.
NukeViet - update to 4.5.09