What’s Vulnerable › Vulnerabilities

CVE-2021-23449: Sandbox Bypass

• Severity: critical (CVSS 10.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-10-18 · updated 2026-06-17
• Weakness: CWE-1321

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.

Affected products

• patriksimek vm2: before 3.9.4 — fixed in 3.9.4

How to fix

Upgrade to a fixed version: patriksimek vm2 3.9.4. Check the vendor advisory for mitigations.

References

• https://github.com/patriksimek/vm2/commit/b4f6e2bd2c4a1ef52fc4483d8e35f28bc4481886
• https://github.com/patriksimek/vm2/issues/363
• https://github.com/patriksimek/vm2/releases/tag/3.9.4
• https://security.netapp.com/advisory/ntap-20211029-0010/
• https://snyk.io/vuln/SNYK-JS-VM2-1585918
• https://github.com/patriksimek/vm2/commit/b4f6e2bd2c4a1ef52fc4483d8e35f28bc4481886
• https://github.com/patriksimek/vm2/issues/363
• https://github.com/patriksimek/vm2/releases/tag/3.9.4
• https://security.netapp.com/advisory/ntap-20211029-0010/
• https://snyk.io/vuln/SNYK-JS-VM2-1585918

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