Description
vm2 is an open source vm/sandbox for Node.js. In version 3.10.4, vm2 is vulnerable to full sandbox escape with arbitrary code execution. Attacker code inside VM.run() obtains host process object and runs host commands with zero host cooperation. This issue has been patched in version 3.10.5.
Affected products
vm2_project: vm2
References6
- github.com/patriksimek/vm2/security/advisories/GHSA-ffh4-j6h5-p… ExploitVendor Advisory
- github.com/patriksimek/vm2/security/advisories/GHSA-ffh4-j6h5-p… ExploitVendor Advisory
- github.com/patriksimek/vm2/releases/tag/v3.10.5 Release Notes
- access.redhat.com/security/cve/CVE-2026-26956
- bugzilla.redhat.com/show_bug.cgi?id=2466548
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26956…
Metrics
- CVSS 3.1
-
9.8
CRITICAL
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 1% percentile: 66 · as of 13 November 2026
- CWE
- CWE-693CWE-653
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.