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CVE-2026-23888 (GCVE-0-2026-23888)

Vulnerability from cvelistv5 – Published: 2026-01-26 21:37 – Updated: 2026-01-27 21:41
VLAI
Title
pnpm: Binary ZIP extraction allows arbitrary file write via path traversal (Zip Slip)
Summary
pnpm is a package manager. Prior to version 10.28.1, a path traversal vulnerability in pnpm's binary fetcher allows malicious packages to write files outside the intended extraction directory. The vulnerability has two attack vectors: (1) Malicious ZIP entries containing `../` or absolute paths that escape the extraction root via AdmZip's `extractAllTo`, and (2) The `BinaryResolution.prefix` field is concatenated into the extraction path without validation, allowing a crafted prefix like `../../evil` to redirect extracted files outside `targetDir`. The issue impacts all pnpm users who install packages with binary assets, users who configure custom Node.js binary locations and CI/CD pipelines that auto-install binary dependencies. It can lead to overwriting config files, scripts, or other sensitive files leading to RCE. Version 10.28.1 contains a patch.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-27 21:40 UTC
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  • CWE-23 - Relative Path Traversal
  • CWE-426 - Untrusted Search Path
Assigner
References
Impacted products
Vendor Product Version CPE status
pnpm pnpm Affected: < 10.28.1
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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