Missing Authorization in nginx-ui - #VU142588
Published: August 14, 2026
Vulnerability identifier: #VU142588
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/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 bypass the secure-session requirement and perform sensitive cluster-wide administrative actions.
The vulnerability exists due to missing authorization in the api/cluster router when handling authenticated requests to cluster node, namespace, and cluster-wide reload/restart endpoints. A remote user can send requests with a valid JWT but without a fresh secure session to bypass the secure-session requirement and perform sensitive cluster-wide administrative actions.
The issue affects routes for node CRUD, namespace CRUD, and cluster-wide nginx reload and restart operations that were mounted with only AuthRequired and Proxy middleware.
Affected software
nginx-ui
Remediation
Install security update from vendor's website.
nginx-ui - update to 2.5.0