by Kastro
Paper/Archive/CVE-2026-44008

CVE-2026-44008

patriksimek vm2 — vm2: Snabox breakout via `neutralizeArraySpeciesBatch`

EPSS 0.9%public exploitCVSS 9.8
critical.is priorityof 100
51
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 58.2.582 × 2011.6Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
vm2< 3.11.2–CNA
Red Hat Ansible Automation Platform 2.1see advisory1785854226redhat-SADP
Red Hat Developer Hubsee advisory–redhat-SADP

Scores by source

GitHub_M (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
redhat-SADP (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

refgithub.com/patriksimek/vm2/security/advisories/GHSA-9qj6-qjgg-37qqrefaccess.redhat.com/security/cve/CVE-2026-44008refbugzilla.redhat.com/show_bug.cgi?id=2477201refsecurity.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44008.jsonadvisoryaccess.redhat.com/errata/RHSA-2026:50850