{"id":"CVE-2026-56677","title":"9Router is an AI router & token saver","summary":"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 with…","severity":"high","cvss":8.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L","cwe":["CWE-306","CWE-918"],"vendor":"9router","product":"9router","affected":["9router <= 0.5.4"],"published":"2026-08-17","updated":"2026-09-16","sourceUpdated":"2026-09-16T13:42:44.260","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-56677","references":[{"url":"https://github.com/decolua/9router/security/advisories/GHSA-8g4w-4ffg-8vgx","label":"security-advisories@github.com"},{"url":"https://github.com/decolua/9router/security/advisories/GHSA-8g4w-4ffg-8vgx","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://github.com/advisories/GHSA-8g4w-4ffg-8vgx"}],"tags":["nvd","ghsa","npm"],"epss":0.00327,"epssPercentile":0.25955,"aliases":["GHSA-8g4w-4ffg-8vgx"],"ecosystem":"npm","ingestedAt":"2026-08-17T22:01:16.707Z","slug":"CVE-2026-56677","body":"## Overview\n\n9Router 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-56677)\n\nAffected packages:\n\n- `9router <= 0.5.4`\n\nSource: https://github.com/advisories/GHSA-8g4w-4ffg-8vgx","depth":"twilight","depthScore":47,"depthScoreParts":{"impact":47.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}