CVE-2026-71424

{
  "id": "CVE-2026-71424",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-17T22:17:26.527",
  "lastModified": "2026-10-22T22:10:00.250",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Onyx is an open-source AI platform. Prior to 3.1.10, 3.2.14, and 4.0.0, Onyx's GET /api/mcp/servers and GET /api/mcp/servers/persona/{persona_id} endpoints expose another user's OAuth Authorization header because OnyxTokenStorage.set_tokens and OnyxTokenStorage.set_client_info in backend/onyx/server/features/mcp/api.py copy per-user tokens into a shared admin MCPConnectionConfig row and _db_mcp_server_to_api_mcp_server returns that row through auth_template.headers to any BASIC_ACCESS user. This issue is fixed in versions 3.1.10, 3.2.14, and 4.0.0."
    },
    {
      "lang": "es",
      "value": "Onyx es una plataforma de IA de código abierto. Antes de las versiones 3.1.10, 3.2.14 y 4.0.0, los endpoints GET /API/mcp/servers y GET /API/mcp/servers/persona/{persona_id} de Onyx exponen el encabezado de autorización OAuth de otro usuario porque OnyxTokenStorage.set_tokens y OnyxTokenStorage.set_client_info en backend/onyx/server/features/mcp/api.py copian los tokens por usuario en una fila compartida de MCPConnectionConfig de administrador y _db_mcp_server_to_api_mcp_server devuelve esa fila a través de auth_template.headers a cualquier usuario BASIC_ACCESS. Este problema está solucionado en las versiones 3.1.10, 3.2.14 y 4.0.0."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "onyx-dot-app",
          "product": "onyx",
          "versions": [
            {
              "version": "< 3.1.10",
              "status": "affected"
            },
            {
              "version": ">= 3.2.0, < 3.2.14",
              "status": "affected"
            },
            {
              "version": ">= 3.3.0-beta.0, < 4.0.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
          "baseScore": 9.6,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 5.8
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-18T17:28:35.060950Z",
          "id": "CVE-2026-71424",
          "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-200"
        },
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/onyx-dot-app/onyx/commit/3f3d79d1a7722fdc84a1c61c8aa830d890017e9e",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/onyx-dot-app/onyx/commit/4001cedd0a8968723bfe95dd188914ed56777910",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/onyx-dot-app/onyx/commit/b103937888fd5008067c2bb6eb6e5424576394f2",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/onyx-dot-app/onyx/pull/11238",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/onyx-dot-app/onyx/pull/11242",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/onyx-dot-app/onyx/pull/11243",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/onyx-dot-app/onyx/releases/tag/v4.0.0",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-q62f-rv3h-f822",
      "source": "[email protected]"
    }
  ]
}