CVE-2021-23449: VM2 Project VM2

Critical severity, CVSS 10.0. EPSS: 3.6% chance of exploitation in the next 30 days.

This affects the package vm2 before 3.9.4 via a Prototype Pollution attack vector, which can lead to execution of arbitrary code on the host machine.

Affected products

• VM2 Project VM2: before 3.9.4 (fixed in 3.9.4)

Published 2021-10-18. Last modified 2026-06-17.