CVE-2026-92949: Patriksimek VM2

Medium severity, CVSS 4.0. EPSS: 0.3% chance of exploitation in the next 30 days.

vm2 versions from 3.9.6 before 3.11.7 fail to properly restrict access to accessor properties on frozen objects, allowing sandboxed scripts to bypass vm.freeze() and vm.readonly() protections. Attackers can use Object.getOwnPropertyDescriptor() or __lookupSetter__() to extract and invoke host object setters directly, mutating properties the embedder explicitly marked read-only.

Affected products

• Patriksimek VM2: from 3.9.6, before 3.11.7 (fixed in 3.11.7)

Published 2026-09-17. Last modified 2026-09-21.