{"id":"CVE-2026-49353","state":"PUBLISHED","title":"9Router: Local-Only Access Gate Bypass in 9router via Host Header SpoofING","description":"9Router is an AI router & token saver. In 0.4.45 and earlier, 9Router's src/dashboardGuard.js local-only access gate used Host and Origin headers in isLocalRequest() to protect /api/mcp/*, /api/tunnel/*, and /api/cli-tools/*, allowing header spoofing in reverse proxy or tunnel deployments to reach MCP child process stdin paths.","publishedAt":"2026-07-15T20:49:15.693Z","updatedAt":"2026-07-16T15:12:31.230Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["decolua 9router"],"affected":[{"vendor":"decolua","product":"9router","versions":[{"version":"<= 0.4.45","status":"affected"}]}],"references":["https://github.com/decolua/9router/security/advisories/GHSA-6g2f-w7g3-77vf","https://github.com/decolua/9router/commit/5e1c1261368e06dced1cbc650684561b2c8844db","https://github.com/decolua/9router/commit/bb86808582067e4fc6f004508a919efb9970d1d5","https://github.com/decolua/9router/releases/tag/v0.4.46"],"weaknesses":["CWE-290"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/49xxx/CVE-2026-49353.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-49353","state":"PUBLISHED","datePublished":"2026-07-15T20:49:15.693Z","dateUpdated":"2026-07-16T15:12:31.230Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-29T14:35:45.903Z"},"containers":{"cna":{"title":"9Router: Local-Only Access Gate Bypass in 9router via Host Header SpoofING","descriptions":[{"lang":"en","value":"9Router is an AI router & token saver. In 0.4.45 and earlier, 9Router's src/dashboardGuard.js local-only access gate used Host and Origin headers in isLocalRequest() to protect /api/mcp/*, /api/tunnel/*, and /api/cli-tools/*, allowing header spoofing in reverse proxy or tunnel deployments to reach MCP child process stdin paths."}],"affected":[{"vendor":"decolua","product":"9router","versions":[{"version":"<= 0.4.45","status":"affected"}]}],"references":[{"url":"https://github.com/decolua/9router/security/advisories/GHSA-6g2f-w7g3-77vf","name":"https://github.com/decolua/9router/security/advisories/GHSA-6g2f-w7g3-77vf","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/decolua/9router/commit/5e1c1261368e06dced1cbc650684561b2c8844db","name":"https://github.com/decolua/9router/commit/5e1c1261368e06dced1cbc650684561b2c8844db","tags":["x_refsource_MISC"]},{"url":"https://github.com/decolua/9router/commit/bb86808582067e4fc6f004508a919efb9970d1d5","name":"https://github.com/decolua/9router/commit/bb86808582067e4fc6f004508a919efb9970d1d5","tags":["x_refsource_MISC"]},{"url":"https://github.com/decolua/9router/releases/tag/v0.4.46","name":"https://github.com/decolua/9router/releases/tag/v0.4.46","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-290","lang":"en","description":"CWE-290: Authentication Bypass by Spoofing","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-15T20:49:15.693Z"},"source":{"advisory":"GHSA-6g2f-w7g3-77vf","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/decolua/9router/security/advisories/GHSA-6g2f-w7g3-77vf","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-16T14:49:42.771907Z","id":"CVE-2026-49353","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-16T15:12:31.230Z"}}]}}}