CVE-2026-43999

Description

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, NodeVM's builtin allowlist can be bypassed when the module builtin is allowed (including via the '*' wildcard). The module builtin exposes Node's Module._load(), which loads any module by name directly in the host context, completely bypassing vm2's builtin restriction. This allows sandboxed code to load excluded builtins like child_process and achieve remote code execution. This vulnerability is fixed in 3.11.0.

PUBLISHED Reserved 2026-05-04 | Published 2026-05-13 | Updated 2026-05-15 | Assigner GitHub_M

Problem types

CWE-863: Incorrect Authorization

Product status

References

github.com/...ek/vm2/security/advisories/GHSA-947f-4v7f-x2v8 exploit

github.com/...ek/vm2/security/advisories/GHSA-947f-4v7f-x2v8

cve.org (CVE-2026-43999)

nvd.nist.gov (CVE-2026-43999)

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