What’s Vulnerable › Vulnerabilities

CVE-2021-23555: Sandbox Bypass

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-02-11 · updated 2026-06-17

Description

The package vm2 before 3.9.6 are vulnerable to Sandbox Bypass via direct access to host error objects generated by node internals during generation of a stacktraces, which can lead to execution of arbitrary code on the host machine.

Affected products

• patriksimek vm2: before 3.9.6 — fixed in 3.9.6

How to fix

Upgrade to a fixed version: patriksimek vm2 3.9.6. Check the vendor advisory for mitigations.

References

• https://github.com/patriksimek/vm2/commit/532120d5cdec7da8225fc6242e154ebabc63fe4d
• https://snyk.io/vuln/SNYK-JS-VM2-2309905
• https://github.com/patriksimek/vm2/commit/532120d5cdec7da8225fc6242e154ebabc63fe4d
• https://snyk.io/vuln/SNYK-JS-VM2-2309905

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