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CVE-2026-55638

CVE-2026-55638 · 9router: Unauthenticated LLM proxy access via /codex rewrite authorization bypass

This page contains facts from public vulnerability sources. Check the original advisory before updating.

9Router is an AI router & token saver. Prior to 0.5.2, 9router protects /v1, /v1beta, /api/v1, and /api/v1beta in src/dashboardGuard.js but omits /codex before next.config.mjs rewrites /codex/* to /api/v1/responses. A remote unauthenticated attacker can send requests to /codex/* to bypass the API-key gate and cause the server to make upstream provider calls using operator-stored LLM provider credentials. This issue is fixed in version 0.5.2.

CVSS 8.6 · High · EPSS 6.6% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • 9router

    Versions
    • < 0.5.2: Affected

    No fix published

  • 9router npm

    Affected ranges
    • SEMVER: < 0.5.2

    Update to 0.5.2

Original sources

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