9Router is an AI router & token saver. Prior to 0.5.6, 9Router deployments that allow requests to reach Next.js without the sanitizing custom-server.js wrapper trust the client-supplied X-9r-Real-Ip header in src/dashboardGuard.js when isLocalRequest decides whether canAccessPublicLlmApi may skip API-key validation for /api/v1/* routes. A remote unauthenticated attacker can set X-9r-Real-Ip to 127.0.0.1 and be classified as a local client, including on the verified GET /api/v1/models route. This permits unauthorized use of the instance owner's configured LLM providers, consumption of paid credits, and enumeration of configured providers and models. This issue is fixed in version 0.5.6.
Metrics
Affected Vendors & Products
References
History
Mon, 28 Sep 2026 20:30:00 +0000
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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Tue, 22 Sep 2026 18:15:00 +0000
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| First Time appeared |
Decolua
Decolua 9router |
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| Vendors & Products |
Decolua
Decolua 9router |
Tue, 22 Sep 2026 16:15:00 +0000
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| Description | 9Router is an AI router & token saver. Prior to 0.5.6, 9Router deployments that allow requests to reach Next.js without the sanitizing custom-server.js wrapper trust the client-supplied X-9r-Real-Ip header in src/dashboardGuard.js when isLocalRequest decides whether canAccessPublicLlmApi may skip API-key validation for /api/v1/* routes. A remote unauthenticated attacker can set X-9r-Real-Ip to 127.0.0.1 and be classified as a local client, including on the verified GET /api/v1/models route. This permits unauthorized use of the instance owner's configured LLM providers, consumption of paid credits, and enumeration of configured providers and models. This issue is fixed in version 0.5.6. | |
| Title | 9Router: Authentication Bypass in Public LLM API via Spoofable X-9r-Real-Ip Header | |
| Weaknesses | CWE-807 | |
| References |
| |
| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-09-22T16:02:25.018Z
Updated: 2026-09-28T19:31:54.707Z
Reserved: 2026-06-22T16:39:01.044Z
Link: CVE-2026-56681
Updated: 2026-09-28T19:31:20.753Z
Status : Deferred
Published: 2026-09-22T16:17:48.350
Modified: 2026-09-28T20:17:10.540
Link: CVE-2026-56681
No data.