CVE-2026-47140: Patriksimek VM2

Critical severity, CVSS 10.0. EPSS: 0.8% chance of exploitation in the next 30 days.

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, NodeVM blocks several dangerous Node.js builtins such as module, worker_threads, cluster, vm, repl, and inspector. However, the denylist misses process and inspector/promises. Both can be used from sandboxed code to reach host-side execution primitives. This allows sandboxed code to bypass the intended builtin restrictions and execute code in the host process. 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.