CVE-2026-44006: vm2: Sandbox Escape

Severity: critical (CVSS 10.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-05-13 · updated 2026-10-26
Weakness: CWE-94

Description

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, It is possible to reach BaseHandler.getPrototypeOf, which can be used to get arbitrary prototypes. This vulnerability is fixed in 3.11.0.

Affected products

patriksimek vm2: before 3.11.0 — fixed in 3.11.0

How to fix

Upgrade to a fixed version: patriksimek vm2 3.11.0. Check the vendor advisory for mitigations.

References

https://github.com/patriksimek/vm2/security/advisories/GHSA-qcp4-v2jj-fjx8
https://access.redhat.com/errata/RHSA-2026:50850
https://access.redhat.com/security/cve/CVE-2026-44006
https://bugzilla.redhat.com/show_bug.cgi?id=2477200
https://github.com/patriksimek/vm2/security/advisories/GHSA-qcp4-v2jj-fjx8
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44006.json

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