CVE-2021-23449

10.0 criticalEPSS 3.6%

Critical (10.0) in vm2 project vm2. EPSS 3.6% chance of exploitation in the next 30 days. Fixed in vm2 3.9.4.

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.

Severity

10.0 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS: 3.6% chance of exploitation in the next 30 days; higher than 89% of CVEs (scores of 2026-10-31)
CWE: CWE-1321
Published: 2021-10-18
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Advisory	Ecosystem	Package	Affected	Fixed in
GHSA-rjf2-j2r6-q8gr	npm	vm2	<3.9.4	3.9.4