by Kastro
Paper/Archive/CVE-2026-47429

CVE-2026-47429

vitest-dev vitest — Vitest: Arbitrary file can be read and executed when Vitest UI server is listening

EPSS 0.9%public exploitCVSS 9.8
critical.is priorityof 100
51
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 59.0.590 × 2011.8Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
vitest< 3.2.5–CNA
vitest>= 4.0.0, < 4.1.0–CNA

Scores by source

GitHub_M (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitgithub.com/vitest-dev/vitest/security/advisories/GHSA-5xrq-8626-4rwprefgithub.com/vitest-dev/vitest/pull/10445refgithub.com/vitest-dev/vitest/pull/9350refgithub.com/vitest-dev/vitest/commit/20e00ef7808de6d330c5e2fda530f686e08f1c8drefgithub.com/vitest-dev/vitest/commit/af88b1f5d82844a4761ea9a977156c98e2b14ca8refgithub.com/vitest-dev/vitest/releases/tag/v3.2.5refgithub.com/vitest-dev/vitest/releases/tag/v4.1.0