{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55641","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-16T23:52:12.057Z","datePublished":"2026-07-10T15:36:05.964Z","dateUpdated":"2026-07-10T19:06:14.379Z"},"containers":{"cna":{"title":"9router: Unauthenticated `/v1` proxy access via `Host`-header spoofing → open AI relay + SSRF","problemTypes":[{"descriptions":[{"cweId":"CWE-290","lang":"en","description":"CWE-290: Authentication Bypass by Spoofing","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-348","lang":"en","description":"CWE-348: Use of Less Trusted Source","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918: Server-Side Request Forgery (SSRF)","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-1327","lang":"en","description":"CWE-1327: Binding to an Unrestricted IP Address","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/decolua/9router/security/advisories/GHSA-86m2-fcxq-5q7c","tags":["x_refsource_CONFIRM"],"url":"https://github.com/decolua/9router/security/advisories/GHSA-86m2-fcxq-5q7c"},{"name":"https://github.com/decolua/9router/commit/b282f0554972ea35281520738759d76abcd0b0b3","tags":["x_refsource_MISC"],"url":"https://github.com/decolua/9router/commit/b282f0554972ea35281520738759d76abcd0b0b3"},{"name":"https://github.com/decolua/9router/releases/tag/v0.5.2","tags":["x_refsource_MISC"],"url":"https://github.com/decolua/9router/releases/tag/v0.5.2"}],"affected":[{"vendor":"decolua","product":"9router","versions":[{"version":"< 0.5.2","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-07-10T15:36:05.964Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-86m2-fcxq-5q7c","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/decolua/9router/security/advisories/GHSA-86m2-fcxq-5q7c","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-10T19:06:04.625545Z","id":"CVE-2026-55641","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-10T19:06:14.379Z"}}]}}