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CVE-2025-68662

Estado: AnalizadaCrítica (9.9)—

Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, a hostname validation issue in FinalDestination could allow bypassing SSRF protections under certain conditions. This issue is patched in versions 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0. No known workarounds are available.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

CVSS AV:N/AC:L/PR:L indica acceso remoto con privilegios: T1210. CWE-918 (SSRF) y bypass de validación permiten proxy/lateral movement (T1090) y acceso a datos internos (T1005).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Vulnerability ScanningThreat Intelligence ProgramSSL/TLS InspectionPrivileged Account ManagementNetwork SegmentationNetwork Intrusion Prevention

Tecnologías afectadas (1)

Discourse — Discourse

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-68662",
  "cveTags": [],
  "metrics": {
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-68662",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-01-28T20:21:10.490100Z"
        }
      }
    ],
    "cvssMetricV31": [
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        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.6,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 4.7,
        "exploitabilityScore": 2.8
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
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          "baseScore": 9.9,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
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  "affected": [
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          "product": "discourse",
          "versions": [
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              "version": "< 3.5.4"
            },
            {
              "status": "affected",
              "version": ">= 2025.11.0-latest, < 2025.11.2"
            },
            {
              "status": "affected",
              "version": ">= 2025.12.0-latest, < 2025.12.1"
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              "version": ">= 2026.1.0-latest, < 2026.1.0"
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  "published": "2026-01-28T20:16:11.860",
  "references": [
    {
      "url": "https://github.com/discourse/discourse/security/advisories/GHSA-gcfp-rjfc-925c",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, a hostname validation issue in FinalDestination could allow bypassing SSRF protections under certain conditions. This issue is patched in versions 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0. No known workarounds are available."
    },
    {
      "lang": "es",
      "value": "Discourse es una plataforma de discusión de código abierto. En versiones anteriores a 3.5.4, 2025.11.2, 2025.12.1 y 2026.1.0, un problema de validación de nombre de host en FinalDestination podría permitir eludir las protecciones SSRF bajo ciertas condiciones. Este problema está parcheado en las versiones 3.5.4, 2025.11.2, 2025.12.1 y 2026.1.0. No se conocen soluciones alternativas disponibles."
    }
  ],
  "lastModified": "2026-06-17T09:59:23.707",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "vulnerable": true,
              "matchCriteriaId": "FDBF21E2-1191-4020-A17A-0702DE4E6451",
              "versionEndExcluding": "3.5.4"
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              "versionEndExcluding": "2025.11.2",
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              "matchCriteriaId": "CCBF47A8-0D3F-4174-8084-CD3517BF272A"
            },
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              "vulnerable": true,
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          "operator": "OR"
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}