by Kastro
Paper/Archive/CVE-2026-44007

CVE-2026-44007

patriksimek vm2 — vm2: nesting: true bypasses require: false, allowing sandbox escape to arbitrary OS command execution

EPSS 1.0%public exploitCVSS 9.9
critical.is priorityof 100
52
CVSS 9.9 (CNA)9.9 / 10 × 3029.7Not in CISA KEV+300.0EPSS percentile 61.6.616 × 2012.3Exploit: 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 3.11.1, when a NodeVM is created with nesting: true, sandbox code can unconditionally require('vm2') regardless of the outer VM's require configuration — including require: false. With access to vm2, the sandbox constructs a new inner NodeVM with its own unrestricted require settings and executes arbitrary OS commands on the host. Any application that runs untrusted code inside a NodeVM with nesting: true is fully compromised. This vulnerability is fixed in 3.11.1.

Affected

ProductAffectedFixed inSource
vm2< 3.11.1–CNA
Red Hat Ansible Automation Platform 2.1see advisory1785854226redhat-SADP
Red Hat Developer Hubsee advisory–redhat-SADP

Scores by source

redhat-SADP (CNA)9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
GitHub_M (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

refgithub.com/patriksimek/vm2/security/advisories/GHSA-8hg8-63c5-gwmxrefopenwall.com/lists/oss-security/2026/05/05/11refaccess.redhat.com/security/cve/CVE-2026-44007refbugzilla.redhat.com/show_bug.cgi?id=2477198refsecurity.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44007.jsonadvisoryaccess.redhat.com/errata/RHSA-2026:50850