{"id":"CVE-2026-56677","sourceIdentifier":"security-advisories@github.com","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":"security-advisories@github.com","affectedData":[{"vendor":"decolua","product":"9router","versions":[{"version":"<= 0.5.4","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","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":"security-advisories@github.com","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":"security-advisories@github.com"},{"url":"https://github.com/decolua/9router/security/advisories/GHSA-8g4w-4ffg-8vgx","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}