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9.5CRITICAL

Critical Nginx UI auth bypass flaw now actively exploited in the wild

📅 15 April 2026 at 22:35 UTC📰 Bleeping ComputerView original source ↗
Critical Nginx UI auth bypass flaw now actively exploited in the wild

A critical vulnerability in Nginx UI with Model Context Protocol (MCP) support is now being exploited in the wild for full server takeover without authentication. [...]

🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview

A critical Nginx UI auth bypass flaw is being actively exploited in the wild, allowing attackers to take full control of servers without authentication. This vulnerability has significant implications for organizations relying on Nginx for web serving and management.

⚙️Technical Details
Affected Systems
Nginx
Attack Vectors
Model Context Protocol (MCP) supportUI auth bypass
💥Impact Assessment
Severity: c
Who Is at Risk
Organizations relying on Nginx for web serving and managementIndividual users accessing Nginx UI
🛡️Recommended Actions
1Apply a patch or update to the latest version of Nginx
2Disable MCP support in Nginx configuration
3Implement additional authentication mechanisms for Nginx UI
📦Affected Products
Nginx

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