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Critical · 9.8 Public exploit CVE-2026-49352 EUVD-2026-44809GHSA-jphh-m39h-6gwx

9Router: Hardcoded Default fallback JWT Secret Allows Authentication Bypass

Published Jul 15, 2026 · Updated Jul 16, 2026 · Assigned by GitHub_M

Description

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

Affected products

VendorProductAffectedFixed
decolua 9router >= 0.2.21, < 0.4.44 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

  • covepseng/cve-2026-49352-poc ★ 1 · Jul 6, 2026

    Exploitability PoC for CVE-2026-49352 (9router Hardcoded JWT Secret Authentication Bypass)

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Affected packages

EcosystemPackageAffectedFixedRecord
npm 9router >= 0.2.21, < 0.4.45 0.4.45 GHSA-jphh-m39h-6gwx

References