Missing Authorization in nginx-ui - #VU138337
Published: July 17, 2026
Vulnerability identifier: #VU138337
CSH Severity: Medium
CVSS v4: 7.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to modify sensitive administrative settings and perform server control actions.
The vulnerability exists due to missing authorization in authenticated mutation routes outside the RequireSecureSession middleware when handling requests without a valid X-Secure-Session-ID secure-session token. A remote user can use a stolen or otherwise obtained authenticated session for a 2FA-enabled user to modify sensitive administrative settings and perform server control actions.
This affects OTP-enabled accounts because several sensitive routes are protected only by authenticated session checks and not by the application's short-lived step-up verification boundary.
Affected software
nginx-ui
Remediation
Install security update from vendor's website.
nginx-ui - update to 2.3.11