CVE-2026-22709

critical

Description

vm2 is an open source vm/sandbox for Node.js. In vm2 prior to version 3.10.2, `Promise.prototype.then` `Promise.prototype.catch` callback sanitization can be bypassed. This allows attackers to escape the sandbox and run arbitrary code. In lib/setup-sandbox.js, the callback function of `localPromise.prototype.then` is sanitized, but `globalPromise.prototype.then` is not sanitized. The return value of async functions is `globalPromise` object. Version 3.10.2 fixes the issue.

References

https://www.bleepingcomputer.com/news/security/critical-sandbox-escape-flaw-discovered-in-popular-vm2-nodejs-library/

https://github.com/patriksimek/vm2/security/advisories/GHSA-99p7-6v5w-7xg8

https://github.com/patriksimek/vm2/releases/tag/v3.10.2

https://github.com/patriksimek/vm2/commit/4b009c2d4b1131c01810c1205e641d614c322a29

Details

Source: Mitre, NVD

Published: 2026-01-26

Updated: 2026-01-27

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

Vulnerability Watch

Tenable Research has classified this CVE under the following Vulnerability Watch classification, which includes active and historical (inactive) classifications. You can learn more about these classifications on our blog.

Vulnerability Being Monitored

Detections

Analytics