Vulnerability Description
Vitest is a testing framework powered by Vite. From 3.0.0 until 3.2.5, 4.1.8, and 5.0.0-beta.4, Vitest Browser Mode exposed a cdp() API that forwarded raw Chrome DevTools Protocol methods without being gated by allowWrite or allowExec, allowing a remote client with exposed browser API metadata to use CDP Page.setDownloadBehavior and Runtime.evaluate to overwrite vite.config.ts and execute attacker-controlled Node.js code. This issue is fixed in versions 3.2.5, 4.1.8, and 5.0.0-beta.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://github.com/vitest-dev/vitest/commit/385a1aefd4c2bfa5e7d58bf7c6834c929969
- https://github.com/vitest-dev/vitest/commit/63e3b2eee4d58da56786a6333f517b9b4925
- https://github.com/vitest-dev/vitest/commit/e4067b3b150005fd42cf75f9943001192458
- https://github.com/vitest-dev/vitest/pull/10444
- https://github.com/vitest-dev/vitest/pull/10450
- https://github.com/vitest-dev/vitest/pull/10456
- https://github.com/vitest-dev/vitest/releases/tag/v3.2.5
- https://github.com/vitest-dev/vitest/releases/tag/v4.1.8
- https://github.com/vitest-dev/vitest/releases/tag/v5.0.0-beta.4
- https://github.com/vitest-dev/vitest/security/advisories/GHSA-g8mr-85jm-7xhm
FAQ
What is CVE-2026-53633?
CVE-2026-53633 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Vitest is a testing framework powered by Vite. From 3.0.0 until 3.2.5, 4.1.8, and 5.0.0-beta.4, Vitest Browser Mode exposed a cdp() API that forwarded raw Chrome DevTools Protocol methods without bein...
How severe is CVE-2026-53633?
CVE-2026-53633 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-53633?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.