critical9.8
CVE-2026-53633
Vitest Browser: Exposed Browser Mode API Can Proxy CDP and Overwrite Config Files, Leading to RCE
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @vitest/browser | >= 5.0.0-beta.0, <= 5.0.0-beta.3 | 5.0.0-beta.4 |
| npm | vite-plus | <= 0.1.23 | 0.1.24 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-g8mr-85jm-7xhm
- https://github.com/vitest-dev/vitest/security/advisories/GHSA-g8mr-85jm-7xhm
- https://nvd.nist.gov/vuln/detail/CVE-2026-53633
- 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/commit/385a1aefd4c2bfa5e7d58bf7c6834c929969f2c7
- https://github.com/vitest-dev/vitest/commit/63e3b2eee4d58da56786a6333f517b9b492528c7
- https://github.com/vitest-dev/vitest/commit/e4067b3b150005fd42cf75f994300119245806b9
- 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