{"id":"CVE-2026-49353","summary":"9Router: Local-Only Access Gate Bypass in 9router via Host Header SpoofING","details":"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.","aliases":["GHSA-6g2f-w7g3-77vf"],"modified":"2026-07-18T03:42:04.550508752Z","published":"2026-07-15T20:49:15.693Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-290"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49353.json","unresolved_ranges":[{"extracted_events":[{"last_affected":"0.4.45"}],"source":"AFFECTED_FIELD"}]},"references":[{"type":"WEB","url":"https://github.com/decolua/9router/releases/tag/v0.4.46"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49353.json"},{"type":"ADVISORY","url":"https://github.com/decolua/9router/security/advisories/GHSA-6g2f-w7g3-77vf"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49353"},{"type":"FIX","url":"https://github.com/decolua/9router/commit/5e1c1261368e06dced1cbc650684561b2c8844db"},{"type":"FIX","url":"https://github.com/decolua/9router/commit/bb86808582067e4fc6f004508a919efb9970d1d5"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/decolua/9router","events":[{"introduced":"0"},{"fixed":"5e1c1261368e06dced1cbc650684561b2c8844db"},{"fixed":"bb86808582067e4fc6f004508a919efb9970d1d5"},{"fixed":"e1db49190a0352a2a93e2269bdba0ff09acb9e3b"}],"database_specific":{"source":"REFERENCES"}}],"versions":["v0.4.52","v0.4.50","v0.4.49","v0.4.46","v0.4.44","v0.4.41","v0.4.39","v0.4.38","v0.4.37","v0.4.36","v0.4.33","v0.4.31","v0.4.30","v0.4.29","v0.4.28","v0.4.27","v0.4.25","v0.4.20","v0.4.19","v0.4.18","v0.4.16","v0.4.14","v0.4.13","v0.4.12","v0.4.11","v0.4.10","v0.4.8","v0.4.6","v0.4.4","v0.4.3","v0.4.2","v0.4.1","v0.3.98","v0.3.97","v0.3.91","v0.3.90","v0.3.89","v0.3.87","v0.3.86","v0.3.83","v0.3.75","v0.3.47","v0.3.42","v0.3.34","v0.3.17","v0.2.89","v0.2.79","v0.2.71","v0.2.70","v0.2.67","v0.2.56","v0.2.52","v0.2.43","v0.2.36","v0.2.31","v0.2.27","v0.2.21"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49353.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:N"}]}