CVE-2026-44007

CRITICAL

vm2: nesting: true bypasses require: false, allowing sandbox escape to arbitrary OS command execution

Title source: cna
STIX 2.1

Description

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.1, when a NodeVM is created with nesting: true, sandbox code can unconditionally require('vm2') regardless of the outer VM's require configuration — including require: false. With access to vm2, the sandbox constructs a new inner NodeVM with its own unrestricted require settings and executes arbitrary OS commands on the host. Any application that runs untrusted code inside a NodeVM with nesting: true is fully compromised. This vulnerability is fixed in 3.11.1.

References (2)

Core 2

Scores

CVSS v3 9.1
EPSS 0.0005
EPSS Percentile 14.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-284
Status published
Products (3)
npm/vm2 0 - 3.11.1npm
patriksimek/vm2 < 3.11.1
vm2_project/vm2 < 3.11.1
Published May 13, 2026
Tracked Since May 13, 2026