CVE-2026-56676
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.
- Affected products
- 9Router
- Fix
- Available
- CVSS 3.1
- 7.4 HIGH
- EPSS
- 0.2% (5th percentile)
- Weakness
- CWE-367, CWE-918
- NVD status
- Deferred
- Published
- 2026-07-10
No indexed exploits for CVE-2026-56676 yet
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