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wid-sec-w-2026-0931  ·  Published 2026-03-30  ·  View on BSI CERT-Bund ↗

nginx-ui: Multiple Vulnerabilities

CVSS 9.8 CRITICAL

Risk Summary

Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.4, the nginx-ui configuration improperly handles URL-encoded traversal sequences. When specially crafted paths are supplied, the backend resolves them to the base Nginx configuration directory and executes the operation on the base directory (/etc/nginx). In particular, this allows an authenticated user to remove the entire /etc/nginx directory, resulting in a partial Denial of Service. This issue has been patched in version 2.3.4.

Affected Vendors

NGINX

Affected Products (2)

NGINX · NGINX UI <2.3.4
NGINX · NGINX UI 2.3.4

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