Summary
Betoche57/mcp-firewall v2026-03-23 was classified as CRITICAL RISK with a risk score of 84. Sigil detected 5 findings across 85 files, covering phases including provenance, code patterns, install hooks. Review the findings below before installing this package.
Package description: 🛡 Enforce security policies, redact data, sandbox processes, and verify integrity for Model Context Protocol (MCP) server communication.
v2026-03-23
23 March 2026, 11:38 UTC
by Sigil Bot
Risk Score
84
Findings
5
Files Scanned
85
Provenance
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
CRITICALnpm lifecycle script — runs automatically on install
repo/npm/package.json:9
"scripts": {
"postinstall": "node install.js"
},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.
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Markdown
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