CVE-2026-47131: Patriksimek VM2

Critical severity, CVSS 10.0. EPSS: 0.6% chance of exploitation in the next 30 days.

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, by combining Buffer.call.call({}.__lookupGetter__, Buffer, "__proto__"), Buffer.call.call({}.__lookupSetter__, Buffer, "__proto__"), and Node.js's ERR_INVALID_ARG_TYPE Error, the host's TypeError constructor can be obtained, which allows the escape from the sandbox. This allows attackers to run arbitrary code. This issue has been patched in version 3.11.4.

Affected products

• Patriksimek VM2: before 3.11.4 (fixed in 3.11.4)

Published 2026-06-12. Last modified 2026-06-17.