{"id":"CVE-2026-55641","revision":"41b40d4137ea421aa1f47db6a2437123","records":[{"revision":"41b40d4137ea421aa1f47db6a2437123","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-55641","aliases":[],"title":"9router: Unauthenticated `/v1` proxy access via `Host`-header spoofing → open AI relay + SSRF","description":"9Router is an AI router & token saver. Prior to 0.5.2, 9router determines whether a /v1 LLM proxy request is local by reading the client-controlled Host header, allowing a remote unauthenticated attacker to send Host: localhost and bypass API-key authentication. In the default configuration, this exposes the /v1 proxy to upstream provider calls using stored provider credentials and allows /v1/search with the searxng provider_options.baseUrl parameter to drive server-side requests to internal or cloud-metadata hosts. This issue is fixed in version 0.5.2.","state":0,"publishedAt":"2026-07-10T15:36:05.964+00:00","modifiedAt":"2026-07-10T19:06:14.379+00:00","affected":[{"ecosystem":"Vendor product","name":"9router","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"decolua\",\n                    \"product\": \"9router\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 0.5.2\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","score":8.2,"severity":"HIGH"}],"references":["https://github.com/decolua/9router/security/advisories/GHSA-86m2-fcxq-5q7c","https://github.com/decolua/9router/commit/b282f0554972ea35281520738759d76abcd0b0b3","https://github.com/decolua/9router/releases/tag/v0.5.2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-55641","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-55641","identifiers":["CVE-2026-55641"]},"retained":false,"historicalAffected":[]}],"coverage":[]}