Critical 9.8Published May 13, 2026

CVE-2026-44008vm2: Snabox breakout via `neutralizeArraySpeciesBatch`

Updated under an hour ago (Oct 27, 2026, 8:40 AM ET)

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It affects patriksimek vm2 and 3 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for patriksimek vm2

Exploited in the last 30 days

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.2, the new method neutralizeArraySpeciesBatch works with objects from the other side but can call into this side via getter on the array prototype exposing objects of the wrong side into the sandbox. This can be used to get host objects and get the host Function object. This allows attackers to write code which can escape from the VM2 sandbox and execute arbitrary commands on the host system. This vulnerability is fixed in 3.11.2.

CVSS: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-668, CWE-1100
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Modified
Record last updated: Sep 7, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

patriksimek vm2 patriksimek:vm2 (from the name)	before 3.11.2	CNA record
Red Hat Red Hat Ansible Automation Platform 2.1 redhat:ansible_portal	from 1785854226 not affected	CISA ADP
Red Hat Red Hat Developer Hub redhat:rhdh	1	CISA ADP
vm2_project vm2 vm2_project:vm2	before 3.11.2	NVD

References

References

https://github.com/patriksimek/vm2/security/advisories/GHSA-9qj6-qjgg-37qq	x-refsource-confirm, exploit, vendor-advisory
https://access.redhat.com/errata/RHSA-2026:50850
https://access.redhat.com/security/cve/CVE-2026-44008
https://bugzilla.redhat.com/show_bug.cgi?id=2477201
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44008.json

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.