CVE-2026-31802 (High) detected in tar-4.4.19.tgz

[mend-bolt-for-github]

CVE-2026-31802 - High Severity Vulnerability

Vulnerable Library - tar-4.4.19.tgz

tar for node

Library home page: https://registry.npmjs.org/tar/-/tar-4.4.19.tgz

Path to dependency file: /package.json

Path to vulnerable library: /node_modules/tar/package.json

Dependency Hierarchy:

• electron-rebuild-1.11.0.tgz (Root Library)
  • node-gyp-6.1.0.tgz
    • ❌ tar-4.4.19.tgz (Vulnerable Library)

Found in base branch: master

Vulnerability Details

node-tar is a full-featured Tar for Node.js. Prior to version 7.5.11, tar (npm) can be tricked into creating a symlink that points outside the extraction directory by using a drive-relative symlink target such as C:../../../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This vulnerability is fixed in 7.5.11.

Publish Date: 2026-03-09

URL: CVE-2026-31802

CVSS 3 Score Details (7.1)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Local
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Changed
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: High
  • Availability Impact: None

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Release Date: 2026-03-09

Fix Resolution: https://github.com/isaacs/node-tar.git - v7.5.11

---

Step up your Open Source Security Game with Mend here