CVE-2026-112949mediumCWE-116CWE-306CWE-94

CVE-2026-112949: medium-severity vulnerability in vitest-dev vitest

Vitest: Code injection via unauthenticated manual mock registration

Published · Updated

Follow this CVE+ Monitor vitest+ Monitor mocker

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 4.7epss 0.3%
Vitest is a Vite-native testing framework for JavaScript and TypeScript projects. From 2.1.0-beta.7 until 4.1.12 and 5.0.3, an unauthenticated non-browser WebSocket client that can reach a development server using interceptorPlugin can register a manual mock whose attacker-controlled url createManualModuleSource inserts unescaped into generated module source. When the developer browser loads the affected module, attacker-controlled JavaScript executes on the development-server origin. This issue is fixed in versions 4.1.12 and 5.0.3.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
Affected products
@vitest · mockervitest-dev · vitest
Related CVEs — vitest-dev vitest

In the same product, most dangerous first.

CVE-2025-24963MEDIUMBrowser mode serves arbitrary files in vitestEPSS 2.4%CVE-2026-53633CRITICALVitest: Exposed Browser Mode API Can Proxy CDP and Overwrite Config Files, Leading to RCEEPSS 0.9%CVE-2026-47429CRITICALVitest: Arbitrary file can be read and executed when Vitest UI server is listeningEPSS 0.9%CVE-2026-73653CRITICALVitest: Browser Mode provider commands bypass the file-access permission gateEPSS 0.8%CVE-2025-24964CRITICALRemote Code Execution when accessing a malicious website while Vitest API server is listeningEPSS 0.7%CVE-2026-47428CRITICALVitest browser mode serves unsanitized otelCarrier query parameter as inline scriptEPSS 0.6%