CVEvulnerability

CVE-2026-112949

4.7 MEDIUM Published 2026-10-20 Modified 2026-10-23 Official page ↗
Status
Awaiting Analysis
Published
2026-10-20
Last modified
2026-10-23
Assigner
[email protected]
CVSS 3.1 ([email protected])
4.7 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
Weaknesses
CWE-116, CWE-306, CWE-94

Description

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.

Related

Weakness · CWE (3)

  • CWE-116 Improper Encoding or Escaping of Output weakness
  • CWE-306 Missing Authentication for Critical Functionality weakness
  • CWE-94 Improper Control of Generation of Code weakness

References