CVE-2026-47429 PUBLISHED

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.

• https://github.com/vitest-dev/vitest/security/advisories/GHSA-5xrq-8626-4rwp
• https://github.com/vitest-dev/vitest/pull/10445
• https://github.com/vitest-dev/vitest/pull/9350
• https://github.com/vitest-dev/vitest/commit/20e00ef7808de6d330c5e2fda530f686e08f1c8d
• https://github.com/vitest-dev/vitest/commit/af88b1f5d82844a4761ea9a977156c98e2b14ca8
• https://github.com/vitest-dev/vitest/releases/tag/v3.2.5
• https://github.com/vitest-dev/vitest/releases/tag/v4.1.0

• CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE