CVE-2026-44008
Critical · CVSS 9.8vm2 — Sandbox Escape leading to Remote Code Execution
- CVSS
- 9.8
- nvd
- EPSS
- 0.85%
- 55th pct
- KEV
- No
- Class
- oss containerizable
- CWE-668, CWE-1100
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.
Search profile — drives PoC discovery
Symbols neutralizeArraySpeciesBatcharray prototype getterhost Function objectVMErrorvm2 sandbox escapegetOwnPropertyDescriptorSymbol.species
Keywords CVE-2026-44008vm2 sandbox escapeneutralizeArraySpeciesBatchvm2 RCEvm2 3.11.2GHSA-9qj6-qjgg-37qqvm2 array species bypassvm2 host function escapeNode.js vm2 arbitrary command executionvm2 prototype getter exploit
Versions: < 3.11.2
Affected packages
| npm | vm2 | 0 → 3.11.2 |
References
- https://github.com/patriksimek/vm2/security/advisories/GHSA-9qj6-qjgg-37qq
- 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
Status: enriched · ingested 2026-06-30T06:00:22.000Z · profiled 2026-07-01T12:30:14.000Z