CVE-2026-33032
Gravedad CVSS v3.1:
CRÍTICA
Tipo:
CWE-306
Ausencia de autenticación para una función crítica
Fecha de publicación:
30/03/2026
Última modificación:
30/03/2026
Descripción
*** Pendiente de traducción *** 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.
Impacto
Puntuación base 3.x
9.80
Gravedad 3.x
CRÍTICA