CVE-2026-56676
9router: Image prefetch DNS rebinding allows SSRF to internal services
- State
- Published
- Severity
- 7.4 High
- Published
- Jul 10, 2026
- Updated
- Jul 13, 2026
- Reserved
- Jun 22, 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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.4 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L | GitHub_M |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
9routerdecolua |
|
References
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