Is AIWerk/mcp-bridge safe to install?

AIWerk/mcp-bridge was flagged as CRITICAL RISK (risk score 220) with 14 findings detected across 156 files. Review the findings before installing.

What security issues were found in AIWerk/mcp-bridge?

Sigil detected 14 findings in AIWerk/mcp-bridge, including patterns related to provenance, code_patterns, network_exfil, install_hooks. See the full scan report for details.

Scans/github/AIWerk/mcp-bridge

AIWerk/mcp-bridge

github

Summary

AIWerk/mcp-bridge v2026-03-22 was classified as CRITICAL RISK with a risk score of 220. Sigil detected 14 findings across 156 files, covering phases including provenance, code patterns, network exfiltration, install hooks. Review the findings below before installing this package.

Package description: MCP Bridge — Multiplex your MCP servers into one interface. Works with Claude Desktop, Cursor, Windsurf, and any MCP client.

CRITICAL RISK(220)

v2026-03-22

22 March 2026, 23:52 UTC

by Sigil Bot

Risk Score

220

Findings

Files Scanned

156

Provenance

Registry

https://github.com/AIWerk/mcp-bridge

Repository

https://github.com/AIWerk/mcp-bridge

Scanned From

https://github.com/AIWerk/mcp-bridge.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-npm-postinstall

CRITICAL

npm lifecycle script — runs automatically on install

repo/docs/universal-recipe-spec.md:132

    "version": "latest",                 // Version constraint (semver, "latest", or pinned)
    "preInstall": [],                    // Shell commands to run before install (rare, security-sensitive — see §9)
    "postInstall": [],                   // Shell commands to run after install (rare, security-sensitive — see §9)

Why was this flagged?

npm lifecycle scripts like postinstall run automatically during package installation with no user interaction required. This is the #1 attack vector for malicious npm packages — attackers embed data theft or backdoor installation in these hooks. Rated CRITICAL because code executes before the developer can review it.

install-npm-postinstall

CRITICAL

npm lifecycle script — runs automatically on install

repo/docs/universal-recipe-spec.md:133

    "preInstall": [],                    // Shell commands to run before install (rare, security-sensitive — see §9)
    "postInstall": [],                   // Shell commands to run after install (rare, security-sensitive — see §9)
    "platforms": {                       // Platform-specific overrides (optional)

Why was this flagged?

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