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Vulnerability record · CVE-2026-44008 · published 13 May 2026

CVE-2026-44008: Vm2 project vm2 exposure of resource to wrong sphere vulnerability

Vm2 Project · Vm2

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.

9.8 CVSS 3.1 Critical EPSS 0.90% · top 41.9% CWE-668 · Exposure of resource to wrong sphereCWE-1100 · CWE-1100
9.8CVSS 3.1 base score
0.90%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References, 1 tagged exploit
6 Aug 2026Last modified by NVD

Description

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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/patriksimek/vm2/security/advisories/GHSA-9qj6-qjgg-37qq ExploitVendor 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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-44008), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.