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CVE-2025-68660

Estado: AnalizadaMedia (5.3)—

Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, an endpoint lets any authenticated user bypass the ai_discover_persona access controls and gain ongoing DM access to personas that may be wired to staff-only categories, RAG document sets, or automated tooling, enabling unauthorized data disclosure. Because the controller also accepts arbitrary user_id, an attacker can impersonate other accounts to trigger unwanted AI conversations on their behalf, generating confusing or abusive PM traffic. 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).

Tecnologías afectadas (1)

Discourse — Discourse

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-68660",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-68660",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-01-28T19:14:05.420094Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.4,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.5,
        "exploitabilityScore": 2.8
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 5.3,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "LOW",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "LOW",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "NONE",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "discourse",
          "product": "discourse",
          "versions": [
            {
              "status": "affected",
              "version": "< 3.5.4"
            },
            {
              "status": "affected",
              "version": ">= 2025.11.0-latest, < 2025.11.2"
            },
            {
              "status": "affected",
              "version": ">= 2025.12.0-latest, < 2025.12.1"
            },
            {
              "status": "affected",
              "version": ">= 2026.1.0-latest, < 2026.1.0"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-01-28T19:16:23.753",
  "references": [
    {
      "url": "https://github.com/discourse/discourse/security/advisories/GHSA-mrvm-rprq-jqqh",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ]
    }
  ],
  "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, an endpoint lets any authenticated user bypass the ai_discover_persona access controls and gain ongoing DM access to personas that may be wired to staff-only categories, RAG document sets, or automated tooling, enabling unauthorized data disclosure. Because the controller also accepts arbitrary user_id, an attacker can impersonate other accounts to trigger unwanted AI conversations on their behalf, generating confusing or abusive PM traffic. 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 la 3.5.4, 2025.11.2, 2025.12.1 y 2026.1.0, un endpoint permite a cualquier usuario autenticado eludir los controles de acceso de ai_discover_persona y obtener acceso DM continuo a personas que pueden estar conectadas a categorías solo para personal, conjuntos de documentos RAG o herramientas automatizadas, lo que permite la divulgación no autorizada de datos. Debido a que el controlador también acepta un user_id arbitrario, un atacante puede suplantar otras cuentas para iniciar conversaciones de IA no deseadas en su nombre, generando tráfico de mensajes privados (PM) confuso o abusivo. 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": "2026-06-17T09:59:23.593",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:discourse:discourse:*:*:*:*:stable:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "FDBF21E2-1191-4020-A17A-0702DE4E6451",
              "versionEndExcluding": "3.5.4"
            },
            {
              "criteria": "cpe:2.3:a:discourse:discourse:*:*:*:*:stable:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "539B5B85-44F0-408E-B994-08BB20EA9C26",
              "versionEndExcluding": "2025.11.2",
              "versionStartIncluding": "2025.11.0"
            },
            {
              "criteria": "cpe:2.3:a:discourse:discourse:2025.12.0:*:*:*:stable:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CCBF47A8-0D3F-4174-8084-CD3517BF272A"
            },
            {
              "criteria": "cpe:2.3:a:discourse:discourse:2026.1.0:*:*:*:stable:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F6CF5F98-F08F-4B28-BBE2-8296760A547E"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security-advisories@github.com"
}