CVE-2026-92944: Patriksimek VM2

Critical severity, CVSS 9.8. EPSS: 0.8% chance of exploitation in the next 30 days.

vm2 versions 3.10.2 through 3.11.6 contain a sandbox escape vulnerability on Node.js 26 where Promise.prototype.finally() bypasses vm2's wrapper protections due to a stale PromiseThenLookupChain protector in V8 14.6. Attackers can exploit this by creating an async function that returns a Promise with an attacker-controlled constructor Symbol.species, allowing them to reach the host Function constructor and process object for arbitrary code execution.

Affected products

• Patriksimek VM2: from 3.10.2, before 3.11.7 (fixed in 3.11.7)

Published 2026-09-17. Last modified 2026-09-19.