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CVE-2026-24909: vlt Mishandles Path Sanitization for tar

January 28, 2026

vlt before 1.0.0-rc.10 mishandles path sanitization for tar, leading to path traversal during extraction.

References

  • github.com/advisories/GHSA-gf2c-jwcj-x929
  • github.com/vltpkg/vltpkg
  • github.com/vltpkg/vltpkg/commit/ff8d4099a1929772cea2adf131285e90ede6b0dd
  • github.com/vltpkg/vltpkg/pull/1334
  • github.com/vltpkg/vltpkg/releases/tag/v1.0.0-rc.10
  • nvd.nist.gov/vuln/detail/CVE-2026-24909
  • www.koi.ai/blog/packagegate-6-zero-days-in-js-package-managers-but-npm-wont-act
  • www.scworld.com/news/six-javascript-zero-day-bugs-lead-to-fears-of-supply-chain-attack

Code Behaviors & Features

Detect and mitigate CVE-2026-24909 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →

Affected versions

All versions before 1.0.0-rc.10

Fixed versions

  • 1.0.0-rc.10

Solution

Upgrade to version 1.0.0-rc.10 or above.

Impact 5.9 MEDIUM

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N

Learn more about CVSS

Weakness

  • CWE-23: Relative Path Traversal

Source file

npm/@vltpkg/tar/CVE-2026-24909.yml

Spotted a mistake? Edit the file on GitLab.

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