CVE-2026-55700

Description

pnpm is a package manager. From 11.3.0 until 11.5.3, `pnpm stage download` derived a local filename from registry-controlled package name and version fields. A crafted manifest could escape the selected download directory and overwrite another reachable file. The merged fix validates both fields, derives one safe filename, and verifies the final destination before writing. This vulnerability is fixed in 11.5.3.

PUBLISHED Reserved 2026-06-17 | Published 2026-06-25 | Updated 2026-06-25 | Assigner GitHub_M

Problem types

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CWE-73: External Control of File Name or Path

Product status

References

github.com/pnpm/pnpm/security/advisories/GHSA-v23m-ccfg-pq9h

github.com/pnpm/pnpm/pull/12303

cve.org (CVE-2026-55700)

nvd.nist.gov (CVE-2026-55700)

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