CVE-2026-56677

{
  "id": "CVE-2026-56677",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-17T22:17:14.970",
  "lastModified": "2026-10-23T16:10:00.313",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "9Router is an AI router & token saver. In 0.5.4 and earlier, the POST /api/auth/oidc/test endpoint in src/app/api/auth/oidc/test/route.js passes the user-controlled issuerUrl parameter to fetchOidcDiscovery() in src/lib/auth/oidc.js without restricting private or loopback destinations, allowing unauthenticated attackers when dashboard login is disabled to scan internal services and reflect OIDC discovery fields including token_endpoint and jwks_uri."
    },
    {
      "lang": "es",
      "value": "9Router es un router de IA y ahorrador de tokens. En 0.5.4 y anteriores, el endpoint POST /api/auth/oidc/test en src/app/api/auth/oidc/test/route.js pasa el parámetro issuerUrl controlado por el usuario a fetchOidcDiscovery() en src/lib/auth/oidc.js sin restringir destinos privados o de bucle invertido, permitiendo a atacantes no autenticados cuando el inicio de sesión del panel de control está deshabilitado escanear servicios internos y reflejar campos de descubrimiento OIDC incluyendo token_endpoint y jwks_uri."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "decolua",
          "product": "9router",
          "versions": [
            {
              "version": "<= 0.5.4",
              "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:H/A:L",
          "baseScore": 8.6,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "HIGH",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 4.7
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-18T15:41:06.622400Z",
          "id": "CVE-2026-56677",
          "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-306"
        },
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/decolua/9router/security/advisories/GHSA-8g4w-4ffg-8vgx",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/decolua/9router/security/advisories/GHSA-8g4w-4ffg-8vgx",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}