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Research1 in 10 popular npm releases needed a hotfix

critical vulnerability

vm2 has sandbox breakout via `neutralizeArraySpeciesBatch`

Fix availableCritical · CVSS 9.8EPSS 0.85%

Published May 8, 2026 · updated Nov 4, 2026

What to do

  1. Upgrade to a fixed version: vm2 3.11.2.
  2. Redeploy and restart long-running processes so they load the fixed code.

Affected packages

npmvm21,263,848 downloads/week

Vulnerable versions
<= 3.11.1
Fixed in
3.11.2

Check your project: npm ls vm2 --all

Is vm2@3.11.2 safe to install? See the upgrade verdict →

Sources

CWE-668 Exposure of Resource to Wrong Sphere · CWE-1100 Insufficient Isolation of System-Dependent Functions

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