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...

NPM: vm2: Mutable Proxies for Host Intrinsic Prototypes Allows Sandbox Escape

NPM: vm2: Mutable Proxies for Host Intrinsic Prototypes Allows Sandbox Escape vulnerability discovered by ? in WordPress Npm vm2 versions = 3.9.6, = 3.10.5...

vm2: Mutable Proxies for Host Intrinsic Prototypes Allows Sandbox Escape

Summary 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...