{"id":"CVE-2026-49352","aliases":["GHSA-jphh-m39h-6gwx"],"url":"https://o3.security/vulnerability/CVE-2026-49352","summary":"9Router: Hardcoded Default fallback JWT Secret  Allows Authentication Bypass","details":"9Router is an AI router & token saver. From 0.2.21 until 0.4.44, 9Router used the hardcoded fallback JWT secret 9router-default-secret-change-me in src/app/api/auth/login/route.js, src/middleware.js, and later src/lib/auth/dashboardSession.js, allowing attackers to forge an auth_token cookie when JWT_SECRET was unset. This issue is fixed in version 0.4.44","published":"2026-07-15T20:43:41.168Z","modified":"2026-08-12T03:51:47.750911747Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.00601,"percentile":0.4608,"asOf":"2026-08-29"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"9router","fixedVersion":"0.4.45"}],"fix":{"url":"https://github.com/decolua/9router/commit/fe3ce25ae3cda48c0702c2d452e17f6ec214009d","label":"decolua/9router@fe3ce25"},"references":[{"type":"WEB","url":"https://github.com/decolua/9router/releases/tag/v0.4.44"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49352.json"},{"type":"ADVISORY","url":"https://github.com/decolua/9router/security/advisories/GHSA-jphh-m39h-6gwx"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49352"},{"type":"FIX","url":"https://github.com/decolua/9router/commit/fe3ce25ae3cda48c0702c2d452e17f6ec214009d"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:47.750911747Z"}}