Description
vm2 is an open source vm/sandbox for Node.js. In 3.10.5, NodeVM's require.root path restriction can be bypassed using filesystem symlinks, allowing sandboxed code to load modules from outside the allowed root directory in host context. Because path validation uses path.resolve() (which does not dereference symlinks) but module loading uses Node's native require() (which does), an attacker can load arbitrary host-realm modules and achieve remote code execution. This vulnerability is fixed in 3.11.0.
Affected products
vm2_project: vm2
References6
- github.com/patriksimek/vm2/security/advisories/GHSA-cp6g-6699-w… ExploitMitigationVendor Advisory
- github.com/patriksimek/vm2/security/advisories/GHSA-cp6g-6699-w… ExploitMitigationVendor Advisory
- access.redhat.com/errata/RHSA-2026:50850
- access.redhat.com/security/cve/CVE-2026-43998
- bugzilla.redhat.com/show_bug.cgi?id=2477206
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43998…
Metrics
- CVSS 3.1
-
8.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H - EPSS — exploit probability
- 1% percentile: 55 · as of 14 November 2026
- CWE
- CWE-59
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.