CVE-2026-47429
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…
Does this matter?
Lower severity and a low EPSS score (0.88%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.88% probability · 59th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Affected
- vitest.dev/vitest
- Source
- security-advisories@github.com
EPSS 0.9% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/vitest-dev/vitest/commit/20e00ef7808de6d330c5e2fda530f686e08f1c8dPatch
- https://github.com/vitest-dev/vitest/commit/af88b1f5d82844a4761ea9a977156c98e2b14ca8Patch
- https://github.com/vitest-dev/vitest/pull/10445Exploit, Issue Tracking, Patch
- https://github.com/vitest-dev/vitest/pull/9350Exploit, Issue Tracking, Patch
- https://github.com/vitest-dev/vitest/releases/tag/v3.2.5Release Notes
- https://github.com/vitest-dev/vitest/releases/tag/v4.1.0Release Notes
- https://github.com/vitest-dev/vitest/security/advisories/GHSA-5xrq-8626-4rwpExploit, Mitigation, Vendor Advisory
- https://github.com/vitest-dev/vitest/security/advisories/GHSA-5xrq-8626-4rwpExploit, Mitigation, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.