CVE-2026-44005

Critical

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.

SeverityCritical

CVSS10.0

Exploit probability—

ProductVm2

PublishedMay 13, 2026

First seenMay 13, 2026

Weakness typeCWE-1321Prototype pollution CWE-94Code injection

How to fix

Update

vm2_project vm23.11.0 or later
vm23.11.0 or later

Vendor advisories

access.redhat.com/errata/RHSA-2026:50850

Affected products

Product	Affected versions	Fixed in
vm2_project vm2	3.9.6 ≤ v < 3.11.0	3.11.0
vm2npm	3.9.6 ≤ v < 3.11.0	3.11.0

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.