CVE-2026-44005
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.
Ver en NVDAnálisis
A critical sandbox escape in the vm2 library for Node.js allows malicious code to bypass isolation and execute arbitrary commands on the host machine. This vulnerability affects versions 3.9.6 through 3.10.5 and is achieved by mutating host-realm prototypes like Object and Array from within the sandbox.
Severidad
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:HCWE-94CWE-1321EPSS
Sin puntaje EPSS aún (CVE muy reciente).
Descripción técnica
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.