---
cve: "CVE-2026-56676"
severity: "HIGH"
cvss: 7.4
epss: "0.3%"
vendor: "decolua"
kev: false
exploited: false
published: "2026-07-10 16:16:34"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-23T12:12:24+02:00"
---

# CVE-2026-56676

> 7.4 HIGH · 🧪 PoC

## Beschreibung

9Router is an AI router & token saver. Prior to 0.5.2, 9router validates image URLs by resolving the host before fetching, but open-sse/translator/concerns/image.js performs the later server-side image fetch with a separate DNS resolution. An authenticated attacker with access to the LLM proxy can use a vision-capable model and an attacker-controlled DNS name that first resolves to a public IP and then rebinds to an internal address, allowing server-side requests to internal-only HTTP services. This issue is fixed in version 0.5.2.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- c7d07448c58bec1200741de0b73305b860416b82 (Commit)
- 5da508af3c3dc6e920286141d1a4ddcd4ec245db (Commit)

## Referenzen

- <https://github.com/decolua/9router/security/advisories/GHSA-cmhj-wh2f-9cgx>
- <https://github.com/decolua/9router/commit/c7d07448c58bec1200741de0b73305b860416b82>
- <https://github.com/decolua/9router/releases/tag/v0.5.2>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-56676) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_