---
cve: "CVE-2026-55501"
severity: "HIGH"
cvss: 7.3
epss: "0.5%"
vendor: "decolua"
kev: false
exploited: false
published: "2026-07-10 16:16:33"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-23T12:32:22+02:00"
---

# CVE-2026-55501

> 7.3 HIGH · 🧪 PoC

## Beschreibung

9Router is an AI router & token saver. Prior to 0.4.80, the dashboard login rate limiter in src/lib/auth/loginLimiter.js derives the client identity from the attacker-controlled X-Forwarded-For HTTP header, and src/app/api/auth/login/route.js uses that spoofable value for checkLock and recordFail. A remote attacker can rotate the X-Forwarded-For value on each login attempt to receive a fresh rate-limit bucket, bypass the 5-attempt threshold and progressive lockout durations, and perform unlimited brute-force attempts against the dashboard password. This issue is fixed in version 0.4.80.

## CVSS-Vektor

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

| 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 | Gering | warn |

## Patch verfügbar (OSV)

- 7648c3412b403a29f04967c4b4e9725e228791d4 (Commit)
- 515e2cc4300ace55650ae366414cd51ef3d675df (Commit)

## Referenzen

- <https://github.com/decolua/9router/security/advisories/GHSA-7cfm-pqrj-xgq7>
- <https://github.com/decolua/9router/commit/7648c3412b403a29f04967c4b4e9725e228791d4>
- <https://github.com/decolua/9router/releases/tag/v0.4.80>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-55501) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_