CVE-2026-56876 (High) detected in extract-zip-1.7.0.tgz

[mend-bolt-for-github]

CVE-2026-56876 - High Severity Vulnerability

Vulnerable Library - extract-zip-1.7.0.tgz

unzip a zip file into a directory using 100% javascript

Library home page: https://registry.npmjs.org/extract-zip/-/extract-zip-1.7.0.tgz

Path to dependency file: /package.json

Path to vulnerable library: /node_modules/extract-zip/package.json

Dependency Hierarchy:

• electron-prebuilt-1.4.13.tgz (Root Library)
  • ❌ extract-zip-1.7.0.tgz (Vulnerable Library)

Found in HEAD commit: ae62db6079d7852a74ec7949f57fe5a5bbcbe2a7

Found in base branch: master

Vulnerability Details

extract-zip does not validate symlink targets when extracting zip archives. When processing a malicious zip file containing a symlink with a relative path like '../../../../etc/passwd', extract-zip will extract the symlink without validation, allowing it to point outside the extraction directory. Depending on how extract-zip is used, an attacker could read or write to arbitrary files.

Publish Date: 2026-06-26

URL: CVE-2026-56876

CVSS 3 Score Details (8.1)

Base Score Metrics:

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

For more information on CVSS3 Scores, click here.

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