FKIE_CVE-2026-43999

Vulnerability from fkie_nvd - Published: 2026-05-13 18:16 - Updated: 2026-05-14 16:16
Severity
9.9 (Critical) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Summary
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.
References
security-advisories@github.comhttps://github.com/patriksimek/vm2/security/advisories/GHSA-947f-4v7f-x2v8Exploit, Mitigation, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/patriksimek/vm2/security/advisories/GHSA-947f-4v7f-x2v8Exploit, Mitigation, Vendor Advisory
Impacted products
Vendor Product Version
vm2_project vm2 *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:vm2_project:vm2:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "6DD48308-6219-4C66-9BE7-246EE56FB834",
              "versionEndExcluding": "3.11.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, NodeVM\u0027s builtin allowlist can be bypassed when the module builtin is allowed (including via the \u0027*\u0027 wildcard). The module builtin exposes Node\u0027s Module._load(), which loads any module by name directly in the host context, completely bypassing vm2\u0027s 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."
    }
  ],
  "id": "CVE-2026-43999",
  "lastModified": "2026-05-14T16:16:23.190",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.9,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 6.0,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-05-13T18:16:16.450",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Mitigation",
        "Vendor Advisory"
      ],
      "url": "https://github.com/patriksimek/vm2/security/advisories/GHSA-947f-4v7f-x2v8"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Mitigation",
        "Vendor Advisory"
      ],
      "url": "https://github.com/patriksimek/vm2/security/advisories/GHSA-947f-4v7f-x2v8"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}


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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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