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CVE-2026-44005

CRITICAL CVSS: 10.0 Published: 2026-05-13 Modified: 2026-08-06

Description

vm2 is an open source vm/sandbox for Node.js. From 3.9.6 to 3.10.5, vm2's bridge exposes mutable proxies for real host-realm intrinsic prototypes and then forwards sandbox writes into the underlying host objects with otherReflectSet() and otherReflectDefineProperty(), which lets attacker-controlled JavaScript running in a default VM or inherited NodeVM mutate shared host Object.prototype, Array.prototype, and Function.prototype from inside the sandbox This vulnerability is fixed in 3.11.0.

Affected Platforms

Vm2 Project Vm2

Weakness Type

CWE-94, CWE-1321, CWE-653

References