CVE-2026-50021

Summary

pnpm is a package manager. Prior to 10.34.0 and 11.4.0, pnpm's tarball extraction worker skips integrity verification when the integrity field is absent from the lockfile resolution. If an attacker can both modify pnpm-lock.yaml to remove the integrity: field and cause the referenced registry URL to serve altered package content, pnpm install –frozen-lockfile can install the altered package without an integrity error. npm's npm ci enforces integrity by default; pnpm's behavior of silently skipping verification is a pnpm-specific fail-open gap. This vulnerability is fixed in 10.34.0 and 11.4.0.

Affected Software

Weaknesses

• CWE-354: CWE-354: Improper Validation of Integrity Check Value

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

Additional References

• https://github.com/pnpm/pnpm/security/advisories/GHSA-q6j5-fjx5-2mc3

References

• https://github.com/pnpm/pnpm/security/advisories/GHSA-q6j5-fjx5-2mc3

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