CVE-2026-73566 (High) detected in tar-7.5.1.tgz

[mend-bolt-for-github]

CVE-2026-73566 - High Severity Vulnerability

Vulnerable Library - tar-7.5.1.tgz

tar for node

Library home page: https://registry.npmjs.org/tar/-/tar-7.5.1.tgz

Sample Path to Dependency File: /devel/electron39/files/packagejsons/package.json

Path to vulnerable library: /devel/electron39/files/packagejsons/package.json

Dependency Hierarchy:

• @⁠electron-ci/is-valid-window-0.0.5.tgz (Root Library)
  • nan-2.23.0.tgz
    • node-gyp-11.5.0.tgz
      • ❌ tar-7.5.1.tgz (Vulnerable Library)

Found in HEAD commit: 25cf57a93f385839bd7e68424038ff713426e4e9

Found in base branch: master

Vulnerability Details

node-tar is a tar archive manipulation library for Node.js. Prior to 7.5.21, node-tar's filesFilter in src/list.ts uses the recursive mapHas helper to walk an archive entry path upward with path.dirname() and no segment cap when tar.t(...) or tar.x(...) receives a non-empty member-selection list. A crafted GNU L or PAX x long-path header with thousands of slash-separated segments reaches this.filter(entry.path, entry) in Parser[CONSUMEHEADER] in src/parse.ts before Unpack[CHECKPATH] applies maxDepth, causing an uncatchable RangeError stack overflow that terminates asynchronous and streaming Node.js consumers. This issue is fixed in version 7.5.21.

Publish Date: 2026-08-13

URL: CVE-2026-73566

CVSS 3 Score Details (7.5)

Base Score Metrics:

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

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: GHSA-r292-9mhp-454m

Release Date: 2026-08-13

Fix Resolution: tar - 7.5.21

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