CVE-2026-49352
9Router: Hardcoded Default fallback JWT Secret Allows Authentication Bypass
Vexday Risk Score
45Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
Exploit maturity
Proof of concept
Public proof of concept exists, but not yet automated.
CVSS 9.8EPSS —KEV nãoPoC públicaNuclei —Metasploit —Patch —
Lifecycle
06 Jul 2026Public PoC
15 Jul 2026Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
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
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
decolua · 9routerpublic PoCs found — 1
githubgithub.com/covepseng/cve-2026-49352-poc★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.