CVE-2026-55638
High
Description
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.
SeverityHigh
CVSS8.6
Exploit probability—
Product9router
PublishedJul 10, 2026
First seenJul 10, 2026
How to fix
Update
- 9router0.5.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| 9routernpm | v < 0.5.2 | 0.5.2 |
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