CVE-2026-47698: Patriksimek VM2

Critical severity, CVSS 9.8. EPSS: 1% chance of exploitation in the next 30 days.

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.6, lib/bridge.js and lib/setup-sandbox.js fail to block stacked indirection through Function.prototype.call around dangerous host prototype getter and setter mutators, allowing sandbox code to sever a host intrinsic's prototype chain and reach e.constructor.constructor for arbitrary host command execution. This issue is fixed in version 3.11.6.

Affected products

• Patriksimek VM2: before 3.11.6 (fixed in 3.11.6)

Published 2026-08-17. Last modified 2026-09-09.