CVE-2026-55638
9router: Unauthenticated LLM proxy access via /codex rewrite authorization bypass
- State
- Published
- Severity
- 8.6 High
- Published
- Jul 10, 2026
- Updated
- Jul 10, 2026
- Reserved
- Jun 16, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.6 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H | GitHub_M |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
9routerdecolua |
|
References
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.