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CVE-2026-112949

Vitest: Code injection via unauthenticated manual mock registration PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
vitest-dev / vitestaffected >= 2.1.0-beta.7, < 4.1.12; affected >= 5.0.0, < 5.0.3
@vitest / mockeraffected >= 2.1.0-beta.7, < 4.1.12; affected >= 5.0.0, < 5.0.3

CWE

CWE-94, CWE-116, CWE-306

References

ADP enrichment

CISA-ADP

No English description supplied.