CVE-2026-47429

critical

Description

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.

References

https://github.com/vitest-dev/vitest/security/advisories/GHSA-5xrq-8626-4rwp

https://github.com/vitest-dev/vitest/releases/tag/v4.1.0

https://github.com/vitest-dev/vitest/releases/tag/v3.2.5

https://github.com/vitest-dev/vitest/pull/9350

https://github.com/vitest-dev/vitest/pull/10445

https://github.com/vitest-dev/vitest/commit/af88b1f5d82844a4761ea9a977156c98e2b14ca8

https://github.com/vitest-dev/vitest/commit/20e00ef7808de6d330c5e2fda530f686e08f1c8d

Details

Source: Mitre, NVD

Published: 2026-07-14

Updated: 2026-07-21

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

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

Severity: Critical

EPSS

EPSS: 0.00232