CVE-2026-44005

CVE-2026-44005 · vm2: Sandbox escape

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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.

CVSS 10.0 · Critical · EPSS 0.8% · Fix available

Published

2026-05-13T17:40:41.578Z

Updated

2026-09-07T12:04:59.824Z

Stack: node

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