CVE-2026-47429
High
High exploit probability or critical severity with a known exploit.
CVSS base
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
0.9%
58.8th percentile
CISA KEV
Not listed
Weakness / dates
CWE-22
Published 2026-07-14 · modified 2026-08-06
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.
Affected
References
- https://github.com/vitest-dev/vitest/commit/20e00ef7808de6d330c5e2fda530f686e08f1c8d
- https://github.com/vitest-dev/vitest/commit/af88b1f5d82844a4761ea9a977156c98e2b14ca8
- exploit https://github.com/vitest-dev/vitest/pull/10445
- exploit https://github.com/vitest-dev/vitest/pull/9350
- https://github.com/vitest-dev/vitest/releases/tag/v3.2.5
- https://github.com/vitest-dev/vitest/releases/tag/v4.1.0
- exploit https://github.com/vitest-dev/vitest/security/advisories/GHSA-5xrq-8626-4rwp
- exploit https://github.com/vitest-dev/vitest/security/advisories/GHSA-5xrq-8626-4rwp