CVE-2026-24120: vm2: Sandbox Breakout Through Promise Species

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-05-04 · updated 2026-10-25
Weakness: CWE-94

Description

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.10.5, the fix for CVE-2023-37466 is insufficient and can be circumvented allowing attackers to write code which can escape from the VM2 sandbox and execute arbitrary commands on the host system. This issue has been patched in version 3.10.5.

Affected products

patriksimek vm2: before 3.10.5 — fixed in 3.10.5

How to fix

Upgrade to a fixed version: patriksimek vm2 3.10.5. Check the vendor advisory for mitigations.

References

https://github.com/patriksimek/vm2/releases/tag/v3.10.5
https://github.com/patriksimek/vm2/security/advisories/GHSA-qvjj-29qf-hp7p
https://access.redhat.com/security/cve/CVE-2026-24120
https://bugzilla.redhat.com/show_bug.cgi?id=2466529
https://github.com/patriksimek/vm2/security/advisories/GHSA-qvjj-29qf-hp7p
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-24120.json

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