CVE-2021-23449

Name: CVE-2021-23449
Creator: NVD / NIST
Published: 2021-10-18T17:15:07.79+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 10/10EPSS 3.48%

Last modified Jun 17, 2026

CVE-2021-23449 is a critical-severity vulnerability rated 10/10 on the CVSS scale. 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.. EPSS estimates a 3.48% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

10/10

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

EPSS Probability

3.48%

87.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1321

Affected Software

Vendor	Product	Versions
Vm2 Project	Vm2	< 3.9.4

References

https://github.com/patriksimek/vm2/commit/b4f6e2bd2c4a1ef52fc4483d8e35f28bc4481886Patch, Third Party Advisory
https://github.com/patriksimek/vm2/issues/363Third Party Advisory
https://github.com/patriksimek/vm2/releases/tag/3.9.4Release Notes, Third Party Advisory
https://security.netapp.com/advisory/ntap-20211029-0010/Third Party Advisory
https://snyk.io/vuln/SNYK-JS-VM2-1585918Exploit, Third Party Advisory
https://github.com/patriksimek/vm2/commit/b4f6e2bd2c4a1ef52fc4483d8e35f28bc4481886Patch, Third Party Advisory
https://github.com/patriksimek/vm2/issues/363Third Party Advisory
https://github.com/patriksimek/vm2/releases/tag/3.9.4Release Notes, Third Party Advisory
https://security.netapp.com/advisory/ntap-20211029-0010/Third Party Advisory
https://snyk.io/vuln/SNYK-JS-VM2-1585918Exploit, Third Party Advisory

Timeline

Published: Oct 18, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-23449?

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.

How severe is CVE-2021-23449?

CVE-2021-23449 has a CVSS score of 10/10 (CRITICAL severity). The EPSS model estimates a 3.48% probability of exploitation in the next 30 days.

How do I fix CVE-2021-23449?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-23449?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST