CVE-2026-44008 vm2: Snabox breakout via `neutralizeArraySpeciesBatch`

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.2, the new method neutralizeArraySpeciesBatch works with objects from the other side but can call into this side via getter on the array prototype exposing objects of the wrong side into the sandbox. This can be used to get host objects...

CVE-2026-44008

CVE-2026-44008 describes a vm2 sandbox escape in the Node.js vm2 library. Before version 3.11.2, the method neutralizeArraySpeciesBatch could interact with objects from the outside and, via a getter on Array.prototype, expose host objects to the sandbox, allowing an attacker to access the host Fu...

CVE-2026-44008 vm2: Snabox breakout via `neutralizeArraySpeciesBatch`

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.2, the new method neutralizeArraySpeciesBatch works with objects from the other side but can call into this side via getter on the array prototype exposing objects of the wrong side into the sandbox. This can be used to get host objects...