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critical vulnerability

vm2: Host-returned Promise rejection can bypass vm2's unhandled-rejection hardening and terminate the host process

Fix availableCritical · CVSS 9.2EPSS 0.49%

Published Oct 5, 2026 · updated Oct 5, 2026

What to do

  1. Upgrade to a fixed version: vm2 3.11.8.
  2. Redeploy and restart long-running processes so they load the fixed code.

Affected packages

npmvm2

Vulnerable versions
>= 3.10.0, <= 3.11.7
Fixed in
3.11.8

Check your project: npm ls vm2 --all

Is vm2@3.11.8 safe to install? See the upgrade verdict →

Sources

CWE-248 Uncaught Exception · CWE-703 Improper Check or Handling of Exceptional Conditions

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