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CVE-2026-47135

Full vulnerability record from the local CVENow database.

Description

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, Symbol.for override in setup-sandbox.js only intercepts 2 of 9 dangerous Node.js cross-realm symbols. Combined with the bridge's set/defineProperty/deleteProperty traps having no isDangerousCrossRealmSymbol key check, sandbox code can obtain real cross-realm symbols, write them to host objects, and control host-side behavior — verified with a full util.promisify hijack chain. This issue has been patched in version 3.11.4.

Severity
HIGH
CVSS score
8.7 (v3.1)
Vulnerability status
Deferred
Source identifier
Published
2026-06-12 15:16:28.007000
Last modified
2026-10-26 11:10:00.157000
View original CVE JSON
{
  "id": "CVE-2026-47135",
  "sourceIdentifier": "[email protected]",
  "published": "2026-06-12T15:16:28.007",
  "lastModified": "2026-10-26T11:10:00.157",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, Symbol.for override in setup-sandbox.js only intercepts 2 of 9 dangerous Node.js cross-realm symbols. Combined with the bridge's set/defineProperty/deleteProperty traps having no isDangerousCrossRealmSymbol key check, sandbox code can obtain real cross-realm symbols, write them to host objects, and control host-side behavior — verified with a full util.promisify hijack chain. This issue has been patched in version 3.11.4."
    },
    {
      "lang": "es",
      "value": "vm2 es una máquina virtual/sandbox de código abierto para Node.js. Antes de la versión 3.11.4, la anulación de Symbol.for en setup-sandbox.js solo interceptaba 2 de los 9 símbolos peligrosos de Node.js entre reinos (cross-realm). Combinado con el hecho de que las trampas set/defineProperty/deleteProperty del puente no realizaban una comprobación de clave isDangerousCrossRealmSymbol, el código de la sandbox podía obtener símbolos reales entre reinos (cross-realm), escribirlos en objetos del host y controlar el comportamiento del lado del host - verificado con una cadena completa de secuestro de util.promisify. Este problema ha sido parcheado en la versión 3.11.4."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "patriksimek",
          "product": "vm2",
          "versions": [
            {
              "version": "< 3.11.4",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N",
          "baseScore": 8.7,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 5.8
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-06-12T00:00:00+00:00",
          "id": "CVE-2026-47135",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-693"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/patriksimek/vm2/commit/928aef51898b5c52a05f05a40c4cfeb52e172878",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/patriksimek/vm2/releases/tag/v3.11.4",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/patriksimek/vm2/security/advisories/GHSA-m5q2-4fm3-vfqp",
      "source": "[email protected]"
    }
  ]
}