PT-2026-29092 · 0Xjacky · Nginx-Ui

Yotampe-Pluto · Published 2026-03-30 · Updated 2026-03-30 · CVE-2026-33032

NVD

CVSS v3.1

9.8

Critical

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Nginx UI is a web user interface for the Nginx web server. In versions 2.3.5 and prior, the nginx-ui MCP (Model Context Protocol) integration exposes two HTTP endpoints: /mcp and /mcp message. While /mcp requires both IP whitelisting and authentication (AuthRequired() middleware), the /mcp message endpoint only applies IP whitelisting - and the default IP whitelist is empty, which the middleware treats as "allow all". This means any network attacker can invoke all MCP tools without authentication, including restarting nginx, creating/modifying/deleting nginx configuration files, and triggering automatic config reloads - achieving complete nginx service takeover. At time of publication, there are no publicly available patches.

Exploit

Fix

Missing Authentication

Weakness Enumeration

CWE-306

Related Identifiers

CVE-2026-33032

Affected Products

Nginx-Ui

References · 2

• 🔥 https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-h6c2-x2m2-mwhf · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-33032 · Security Note