Summary
postmanlabs/postman-mcp-server v2026-03-20 was classified as CRITICAL RISK with a risk score of 118. Sigil detected 11 findings across 317 files, covering phases including provenance, install hooks. Review the findings below before installing this package.
Package description: Connect your AI to your APIs on Postman
v2026-03-20
21 March 2026, 00:40 UTC
by Sigil Bot
Risk Score
118
Findings
11
Files Scanned
317
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/dist/package.json:10
"scripts": {
"preinstall": "npx only-allow pnpm",
"start:stdio": "node dist/src/index.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.
install-npm-postinstall
CRITICALnpm lifecycle script — runs automatically on install
repo/package.json:10
"scripts": {
"preinstall": "npx only-allow pnpm",
"start:stdio": "node dist/src/index.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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