---
cve: "CVE-2026-55638"
severity: "HIGH"
cvss: 8.6
epss: "0.6%"
vendor: "decolua"
kev: false
exploited: false
published: "2026-07-10 17:16:59"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-10-01T00:47:36+02:00"
---

# CVE-2026-55638

> 8.6 HIGH · 🧪 PoC

## Beschreibung

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.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **poc**
  - Automatable: **yes**
  - Technical Impact: **partial**

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Gering | warn |
| I Integrität | Gering | warn |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- b282f0554972ea35281520738759d76abcd0b0b3 (Commit)
- 5da508af3c3dc6e920286141d1a4ddcd4ec245db (Commit)

## Referenzen

- <https://github.com/decolua/9router/security/advisories/GHSA-8gmq-j984-vp4r>
- <https://github.com/decolua/9router/commit/b282f0554972ea35281520738759d76abcd0b0b3>
- <https://github.com/decolua/9router/releases/tag/v0.5.2>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-55638) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_