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News > Attacks & Threats > Critical MCP Integration Flaw Puts NGINX at Risk

Critical MCP Integration Flaw Puts NGINX at Risk

Attackers can abuse the near-maximum severity flaw in nginx-ui to restart, create, modify, and delete NGINX configuration files.

Attackers are actively exploiting a critical flaw in the widely used nginx-ui interface for managing NGINX web servers.

The flaw, tracked as CVE-2026-33032, (CVSS: 9.8) stems from nginx-ui's insecure implementation of the Model Context Protocol (MCP) and gives attackers a way to make unauthorized changes to NGINX server configurations with little or no authentication in some cases. More here

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A proof-of-concept exploit (PoC) shows how someone with admin privileges can exploit the issue to steal passwords, and thus use them to engage in further malicious activity. More...

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