vm2: NodeVM builtin allowlist bypass via `module` builtin’s `Module._load` allows sandbox escape_CVE-2026-43999

{
    "lastseen": "",
    "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": "2026-05-13T17:21:22.308Z",
    "modified": "2026-05-13T17:21:22.308Z",
    "type": "cve",
    "title": "vm2: NodeVM builtin allowlist bypass via `module` builtin's `Module._load` allows sandbox escape",
    "source": "GitHub_M",
    "references": "https://github.com/patriksimek/vm2/security/advisories/GHSA-947f-4v7f-x2v8",
    "id": "CVE-2026-43999",
    "bulletinFamily": "",
    "cwe": [
        "CWE-863"
    ],
    "cvelist": null,
    "sourceData": "patriksimek vm2 < 3.11.0",
    "sourceHref": "",
    "cvss": {
        "score": 9.9,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "vm2",
    "version": "< 3.11.0",
    "vendor": "patriksimek",
    "ai_description": "NodeVM's builtin allowlist can be bypassed, allowing sandboxed code to load excluded builtins and achieve remote code execution",
    "ai_severity": "Critical",
    "ai_vendor": "patriksimek",
    "ai_product": "vm2",
    "ai_version": "< 3.11.0",
    "ai_score": 9.9
}