CVE-2026-44000

{
  "id": "CVE-2026-44000",
  "sourceIdentifier": "[email protected]",
  "published": "2026-05-13T18:16:16.590",
  "lastModified": "2026-10-26T17:10:03.270",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, a sandbox boundary violation in vm2 allows host object identity to cross into the sandbox through host Promise resolution. When a host-side Promise that resolves to a host object is exposed to the sandbox, the value delivered to the sandbox .then() callback preserves host identity. This allows the sandbox to interact with the host object directly, including performing identity checks using host-side WeakMap and mutating host object state from inside the sandbox. This behavior occurs because the Promise fulfillment wrapper uses ensureThis() instead of the stronger cross-realm conversion path (from() / proxy wrapping). If no prototype mapping is found, ensureThis() returns the original object. As a result, objects resolved by host Promises can cross the sandbox boundary without proper isolation. This vulnerability is fixed in 3.11.0."
    },
    {
      "lang": "es",
      "value": "vm2 es una vm/sandbox de código abierto para Node.js. Antes de la versión 3.11.0, una violación del límite de la sandbox en vm2 permite que la identidad de objetos del host cruce a la sandbox a través de la resolución de Promises del host. Cuando una Promise del lado del host que se resuelve en un objeto del host se expone a la sandbox, el valor entregado a la función de devolución de llamada .then() de la sandbox preserva la identidad del host. Esto permite a la sandbox interactuar directamente con el objeto del host, incluyendo la realización de comprobaciones de identidad utilizando WeakMap del lado del host y la mutación del estado del objeto del host desde dentro de la sandbox. Este comportamiento ocurre porque el envoltorio de cumplimiento de Promise utiliza ensureThis() en lugar de la ruta de conversión entre reinos más robusta (from() / envoltura de proxy). Si no se encuentra ninguna asignación de prototipo, ensureThis() devuelve el objeto original. Como resultado, los objetos resueltos por Promises del host pueden cruzar el límite de la sandbox sin el aislamiento adecuado. Esta vulnerabilidad se corrige en la versión 3.11.0."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "patriksimek",
          "product": "vm2",
          "versions": [
            {
              "version": "< 3.11.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.5
      },
      {
        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
          "baseScore": 7.2,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.7
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-05-13T18:20:50.439269Z",
          "id": "CVE-2026-44000",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-693"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:vm2_project:vm2:*:*:*:*:*:node.js:*:*",
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  "references": [
    {
      "url": "https://github.com/patriksimek/vm2/security/advisories/GHSA-mpf8-4hx2-7cjg",
      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://github.com/patriksimek/vm2/security/advisories/GHSA-mpf8-4hx2-7cjg",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Vendor Advisory"
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    }
  ]
}