9.6 CriticalCWE-79
CVE-2026-47428
Vitest browser mode serves unsanitized otelCarrier query parameter as inline script
vitest-devvitest
Status
- Not in CISA KEV
Exploit probabilityEPSSchecked 25 Oct
0.6%probability of exploitation in the next 30 days
Higher than 47% of scored CVEs
SeverityCVSS
9.6Critical
Description NVD
Vitest is a testing framework powered by Vite. From 4.0.17 until 4.1.6 and 5.0.0-beta.3, Vitest Browser Mode served /__vitest_test__/ with the otelCarrier query parameter inserted directly into an inline module script, allowing a crafted browser-runner URL to execute arbitrary JavaScript in the Vitest server origin and recover VITEST_API_TOKEN for authenticated API calls. This issue is fixed in versions 4.1.6 and 5.0.0-beta.3.
Coverage 1 article · 1 outlet
- Critical Vitest flaws expose dev setups to remote code executionSecurityOnline · first in our coverage