CVE-2026-44005

What it is

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.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data tampering, service disruption.

Exploit odds

0.8% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-05-13 18:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-10-26 17:10 UTC Last updatedMost recent change to the record

Details

Published

2026-05-13 18:16 UTC

Last modified

2026-10-26 17:10 UTC

Exploit probability

0.8% · EPSS, next 30 days

Weakness

CWE-94 · Code injection

Record status

Modified

Affected

• vm2 Project vm2 < 3.11.0

Attack profile CVSS 3.1 · 10.0

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Changed

Confidentiality

None

Integrity

High

Availability

High