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CVE-2026-55700

CVE-2026-55700 · pnpm: stage download writes outside destination via manifest version traversal

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 7.1 · High · EPSS 0.4% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • pnpm

    Versions
    • >= 11.3.0, < 11.5.3: Affected

    No fix published

  • pnpm npm

    Affected ranges
    • SEMVER: ≥ 11.3.0, < 11.5.3

    Update to 11.5.3

Original sources

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