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CVE-2026-47429

CVE-2026-47429 · Vitest: Arbitrary file can be read and executed when Vitest UI server is listening

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Vitest is a testing framework powered by Vite. Prior to 3.2.5 and 4.1.0, the Vitest UI/API server on Windows used isFileServingAllowed incorrectly for /__vitest_attachment__, allowing \\?\\..\\ path traversal to read files outside the project; exposed API write and rerun features such as saveTestFile and rerun could also allow arbitrary script execution. This issue is fixed in versions 3.2.5 and 4.1.0.

CVSS 9.8 · Critical · EPSS 0.9% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • vitest

    Versions
    • < 3.2.5: Affected
    • >= 4.0.0, < 4.1.0: Affected

    No fix published

  • vitest npm

    Affected ranges
    • SEMVER: ≥ 4.0.0, < 4.1.0

    Update to 4.1.0

  • vitest npm

    Affected ranges
    • SEMVER: < 3.2.6

    Update to 3.2.6

Original sources

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