CVE-2026-43998

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.

• CWE-59
• CWE-59

• https://github.com/patriksimek/vm2/security/advisories/GHSA-cp6g-6699-wx9cExploit, Mitigation, Vendor Advisory
• https://access.redhat.com/errata/RHSA-2026:50850
• https://access.redhat.com/security/cve/CVE-2026-43998
• https://bugzilla.redhat.com/show_bug.cgi?id=2477206
• https://github.com/patriksimek/vm2/security/advisories/GHSA-cp6g-6699-wx9cExploit, Mitigation, Vendor Advisory
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43998.json

Published

May 13, 2026

Last Modified

Aug 6, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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