CVE-2026-47686: Patriksimek VM2

Critical severity, CVSS 9.9. EPSS: 0.6% chance of exploitation in the next 30 days.

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.6, handleException() in lib/setup-sandbox.js sanitizes SuppressedError.error, SuppressedError.suppressed, and AggregateError.errors but does not sanitize Error.cause, allowing sandbox code to obtain a powerful host object such as process from an embedder-exposed host function that throws an error with that object as its cause and then execute arbitrary host commands. 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.