Description
vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, it is possible to obtain the host Object. There are various ways to use the host Object, to escape the sandbox, one example would be using HostObject.getOwnPropertySymbols to obtain Symbol(nodejs.util.inspect.custom). This vulnerability is fixed in 3.11.0.
Affected products
vm2_project: vm2
References6
- github.com/patriksimek/vm2/security/advisories/GHSA-47x8-96vw-5… ExploitVendor Advisory
- github.com/patriksimek/vm2/security/advisories/GHSA-47x8-96vw-5… ExploitVendor Advisory
- access.redhat.com/errata/RHSA-2026:50850
- access.redhat.com/security/cve/CVE-2026-43997
- bugzilla.redhat.com/show_bug.cgi?id=2477203
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43997…
Metrics
- CVSS 3.1
-
10.0
CRITICAL
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - EPSS — exploit probability
- 1% percentile: 63 · as of 14 November 2026
- CWE
- CWE-94CWE-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.