CVE-2026-47429

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.

• CWE-22

• 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

Published

Jul 14, 2026

Last Modified

Aug 6, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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