9.8 CriticalCWE-749
CVE-2026-53633
Vitest: Exposed Browser Mode API Can Proxy CDP and Overwrite Config Files, Leading to RCE
vitest-devvitest
Status
- Not in CISA KEV
Exploit probabilityEPSSchecked 25 Oct
0.9%probability of exploitation in the next 30 days
Higher than 59% of scored CVEs
SeverityCVSS
9.8Critical
Description NVD
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.
Coverage 1 article · 1 outlet
- Vitest RCE Vulnerability (CVSS 9.8): Public PoC Disclosed for Testing Tool With 57M Weekly Downloads (CVE-2026-53633)SecurityOnline · first in our coverage