CVE-2026-44007
Critical · CVSS 9.1vm2 — Sandbox escape via nested NodeVM unrestricted require() leading to arbitrary OS command execution
- CVSS
- 9.1
- nvd
- EPSS
- 0.90%
- 56th pct
- KEV
- No
- Class
- oss containerizable
- CWE-284, CWE-1100
Description
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.
Search profile — drives PoC discovery
Symbols NodeVMnestingrequire('vm2')nesting: truerequire: falsevm2NodeVM constructorrequire configuration
Keywords CVE-2026-44007vm2 sandbox escapevm2 nesting bypassNodeVM nesting require bypassvm2 3.11.1vm2 arbitrary command executionvm2 nested NodeVM RCEGHSA-8hg8-63c5-gwmxvm2 require false bypass
Versions: <3.11.1
Affected packages
| npm | vm2 | 0 → 3.11.1 |
References
- https://github.com/patriksimek/vm2/security/advisories/GHSA-8hg8-63c5-gwmx
- http://www.openwall.com/lists/oss-security/2026/05/05/11
- https://access.redhat.com/errata/RHSA-2026:50850
- https://access.redhat.com/security/cve/CVE-2026-44007
- https://bugzilla.redhat.com/show_bug.cgi?id=2477198
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44007.json
Status: enriched · ingested 2026-06-30T06:00:22.000Z · profiled 2026-07-01T12:30:14.000Z