Is ChiR24/Unreal_mcp safe to install?

ChiR24/Unreal_mcp was flagged as CRITICAL RISK (risk score 954) with 70 findings detected across 286 files. Review the findings before installing.

What security issues were found in ChiR24/Unreal_mcp?

Sigil detected 70 findings in ChiR24/Unreal_mcp, including patterns related to provenance, code_patterns, install_hooks, network_exfil. See the full scan report for details.

Scans/github/ChiR24/Unreal_mcp

ChiR24/Unreal_mcp

github

Summary

ChiR24/Unreal_mcp v2026-03-23 was classified as CRITICAL RISK with a risk score of 954. Sigil detected 70 findings across 286 files, covering phases including provenance, code patterns, install hooks, network exfiltration. Review the findings below before installing this package.

Package description: A comprehensive Model Context Protocol (MCP) server that enables AI assistants to control Unreal Engine through the native C++ Automation Bridge plugin. Built with TypeScript and C++.

CRITICAL RISK(954)

v2026-03-23

23 March 2026, 11:45 UTC

by Sigil Bot

Risk Score

954

Findings

Files Scanned

286

Provenance

Registry

https://github.com/ChiR24/Unreal_mcp

Repository

https://github.com/ChiR24/Unreal_mcp

Scanned From

https://github.com/ChiR24/Unreal_mcp.git

Findings by Phase

•

Phase Ordering

Phases are ordered by criticality, with the most dangerous at the top. Click any phase header to expand or collapse its findings. Critical phases are expanded by default.

install-pip-setup-exec

CRITICAL

setup.py executes code at install time

repo/plugins/McpAutomationBridge/Source/McpAutomationBridge/Private/McpAutomationBridge_ControlHandlers.cpp:733

    }
    if (!SMC->GetStaticMesh()->GetBodySetup()) {
      SendStandardErrorResponse(

Why was this flagged?

This setup.py calls subprocess, os.system, exec, or eval during package installation. Legitimate packages rarely need to execute arbitrary commands at install time. This pattern is commonly used by malicious packages to download and run payloads, exfiltrate environment variables, or establish persistence. Rated CRITICAL because it runs with the installer's full permissions.

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