Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-33032

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 prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 15.7%
CVSS Severity
CVSS v3 Score 9.8
Products affected by CVE-2026-33032


Contact Us

Shodan ® - All rights reserved