CVE-2026-43999
Last modified
CVE-2026-43999 is a critical-severity vulnerability rated 9.9/10 on the CVSS scale. 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). EPSS estimates a 0.67% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Vm2 Project | Vm2 | < 3.11.0 |
References
- https://github.com/patriksimek/vm2/security/advisories/GHSA-947f-4v7f-x2v8Exploit, Mitigation, Vendor Advisory
- https://github.com/patriksimek/vm2/security/advisories/GHSA-947f-4v7f-x2v8Exploit, Mitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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