{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55638","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-16T23:52:12.057Z","datePublished":"2026-07-10T15:38:21.922Z","dateUpdated":"2026-07-10T16:46:33.965Z"},"containers":{"cna":{"title":"9router: Unauthenticated LLM proxy access via /codex rewrite authorization bypass","problemTypes":[{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"CWE-862: Missing Authorization","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-863","lang":"en","description":"CWE-863: Incorrect Authorization","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.6,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/decolua/9router/security/advisories/GHSA-8gmq-j984-vp4r","tags":["x_refsource_CONFIRM"],"url":"https://github.com/decolua/9router/security/advisories/GHSA-8gmq-j984-vp4r"},{"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":"2026-07-10T15:38:21.922Z"},"descriptions":[{"lang":"en","value":"9Router is an AI router & token saver. Prior to 0.5.2, 9router protects /v1, /v1beta, /api/v1, and /api/v1beta in src/dashboardGuard.js but omits /codex before next.config.mjs rewrites /codex/* to /api/v1/responses. A remote unauthenticated attacker can send requests to /codex/* to bypass the API-key gate and cause the server to make upstream provider calls using operator-stored LLM provider credentials. This issue is fixed in version 0.5.2."}],"source":{"advisory":"GHSA-8gmq-j984-vp4r","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/decolua/9router/security/advisories/GHSA-8gmq-j984-vp4r","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-10T16:45:56.907696Z","id":"CVE-2026-55638","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":"2026-07-10T16:46:33.965Z"}}]}}