CVE-2026-56676
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
10/07/2026
Last modified:
13/07/2026
Description
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.
Impact
Base Score 3.x
7.40
Severity 3.x
HIGH