{"id":"CVE-2026-56675","state":"PUBLISHED","title":"9router: Reverse proxy locality collapse allows unauthenticated access to 9router /v1 APIs","description":"9Router is an AI router & token saver. Prior to 0.5.2, 9router treats loopback requests as trusted and allows /v1/* access without an API key, so a same-host reverse proxy that forwards public traffic to the backend through 127.0.0.1 causes src/dashboardGuard.js to misclassify external requests as local. A remote unauthenticated attacker can access /v1 APIs such as /v1/models and may abuse configured upstream provider credentials through /v1 proxy endpoints depending on enabled providers. This issue is fixed in version 0.5.2.","publishedAt":"2026-07-10T15:39:23.282Z","updatedAt":"2026-07-10T16:55:03.329Z","severity":{"score":8.3,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["decolua 9router"],"affected":[{"vendor":"decolua","product":"9router","versions":[{"version":"< 0.5.2","status":"affected"}]}],"references":["https://github.com/decolua/9router/security/advisories/GHSA-x5c9-v98j-722r","https://github.com/decolua/9router/commit/da667836cc7584bea0edd893de1d590c9ea279dc","https://github.com/decolua/9router/releases/tag/v0.5.2"],"weaknesses":["CWE-287","CWE-290","CWE-306","CWE-441"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/56xxx/CVE-2026-56675.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-56675","state":"PUBLISHED","datePublished":"2026-07-10T15:39:23.282Z","dateUpdated":"2026-07-10T16:55:03.329Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-22T16:39:01.044Z"},"containers":{"cna":{"title":"9router: Reverse proxy locality collapse allows unauthenticated access to 9router /v1 APIs","descriptions":[{"lang":"en","value":"9Router is an AI router & token saver. Prior to 0.5.2, 9router treats loopback requests as trusted and allows /v1/* access without an API key, so a same-host reverse proxy that forwards public traffic to the backend through 127.0.0.1 causes src/dashboardGuard.js to misclassify external requests as local. A remote unauthenticated attacker can access /v1 APIs such as /v1/models and may abuse configured upstream provider credentials through /v1 proxy endpoints depending on enabled providers. This issue is fixed in version 0.5.2."}],"affected":[{"vendor":"decolua","product":"9router","versions":[{"version":"< 0.5.2","status":"affected"}]}],"references":[{"url":"https://github.com/decolua/9router/security/advisories/GHSA-x5c9-v98j-722r","name":"https://github.com/decolua/9router/security/advisories/GHSA-x5c9-v98j-722r","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/decolua/9router/commit/da667836cc7584bea0edd893de1d590c9ea279dc","name":"https://github.com/decolua/9router/commit/da667836cc7584bea0edd893de1d590c9ea279dc","tags":["x_refsource_MISC"]},{"url":"https://github.com/decolua/9router/releases/tag/v0.5.2","name":"https://github.com/decolua/9router/releases/tag/v0.5.2","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":8.3,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-287","lang":"en","description":"CWE-287: Improper Authentication","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-290","lang":"en","description":"CWE-290: Authentication Bypass by Spoofing","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-306","lang":"en","description":"CWE-306: Missing Authentication for Critical Function","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-441","lang":"en","description":"CWE-441: Unintended Proxy or Intermediary ('Confused Deputy')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-10T15:39:47.530Z"},"source":{"advisory":"GHSA-x5c9-v98j-722r","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-10T16:54:55.352353Z","id":"CVE-2026-56675","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-10T16:55:03.329Z"}}]}}}