CVE-2026-49411

{
  "id": "CVE-2026-49411",
  "sourceIdentifier": "[email protected]",
  "published": "2026-06-23T18:18:03.440",
  "lastModified": "2026-10-25T23:10:00.167",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.8.0, the Node.js compatibility TCP path checked the permission against the original hostname string before resolution and then did not re-check after resolution. A caller could therefore pass a numeric alias of an IP address (for example the decimal integer 2130706433 or the hex form 0x7f000001, both of which resolve to 127.0.0.1) and reach the denied destination through node:net.connect or node:http.request's { host, port } options form. This vulnerability is fixed in 2.8.0."
    },
    {
      "lang": "es",
      "value": "Deno es un entorno de ejecución de JavaScript, TypeScript y WebAssembly. Antes de la versión 2.8.0, la ruta TCP de compatibilidad con Node.js verificaba el permiso contra la cadena de nombre de host original antes de la resolución y luego no volvía a verificar después de la resolución. Un llamador podría, por lo tanto, pasar un alias numérico de una dirección IP (por ejemplo, el entero decimal 2130706433 o la forma hexadecimal 0x7f000001, ambos de los cuales se resuelven a 127.0.0.1) y alcanzar el destino denegado a través de node:net.connect o la forma de opciones { host, port } de node:http.request. Esta vulnerabilidad se corrige en la versión 2.8.0."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "denoland",
          "product": "deno",
          "versions": [
            {
              "version": "< 2.8.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.0,
        "impactScore": 4.0
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-06-26T18:55:45.500229Z",
          "id": "CVE-2026-49411",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        }
      ]
    },
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:deno:deno:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "2.7.14",
              "versionEndExcluding": "2.8.0",
              "matchCriteriaId": "CCC58C9A-9D40-4DEA-B856-50BBDEB3A701"
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  "references": [
    {
      "url": "https://github.com/denoland/deno/security/advisories/GHSA-v8fw-85r8-5m23",
      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Mitigation",
        "Third Party Advisory"
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    },
    {
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      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
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}