CVE-2026-44001

High

Description

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, a sandbox escape vulnerability in vm2 v3.10.5 allows any sandboxed code to crash the host Node.js process via a single Promise constructor that triggers an unhandled rejection propagating to the host. The fix for CVE-2026-22709 (v3.10.2) only sanitized the onRejected callback in .then() and .catch() overrides and did not address the executor-to-unhandledRejection path. This vulnerability is fixed in 3.11.0.

SeverityHigh

CVSS8.6

Exploit probability—

ProductVm2

PublishedMay 13, 2026

First seenMay 13, 2026

Weakness typeCWE-248CWE-248

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	v < 3.11.0	3.11.0
vm2npm	v < 3.11.0	3.11.0

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