Supply Chain Security Market: Why npm and pnpm audit miss vulnerabilities

This technical article explains why npm and pnpm audit commands can produce conflicting results and miss vulnerabilities. It clarifies that audit is a network request to the registry's audit endpoint, relying solely on the GitHub Advisory Database. The piece identifies four structural gaps: single-source dependency, silent failure without network, npm-ecosystem exclusivity, and lack of reachability analysis or inventory output. The differences between npm and pnpm audit stem from how each resolves the dependency tree and the timing of data. The author recommends a more robust approach: using lockfile-based scanning with aggregated open advisory data like OSV, and producing CycloneDX SBOMs for durable coverage. The article is technical and applicable to developers concerned with supply chain security.