Arbitrary Code Injection Affecting vm2 package, versions >=3.9.6 <3.11.0
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Start learning- Snyk IDSNYK-JS-VM2-16438932
- published7 May 2026
- disclosed7 May 2026
- credithongancalif
Introduced: 7 May 2026
NewCVE-2026-44005 (opens in a new tab)How to fix?
Upgrade vm2 to version 3.11.0 or higher.
Overview
vm2 is a sandbox that can run untrusted code with whitelisted Node's built-in modules.
Affected versions of this package are vulnerable to Arbitrary Code Injection through the BaseHandler write traps in lib/bridge.js. An attacker can mutate host Object.prototype, Array.prototype, Function.prototype, and similar intrinsics by supplying a bridge proxy to one of those objects and then using assignment, Object.defineProperty, delete, or Object.preventExtensions from sandbox code. The bridge forwards those operations into the real host object, so attacker-controlled properties become visible to host-side code, existing methods can be removed or replaced, and host prototypes can be frozen to break later property installation and other normal runtime behavior.