CVE-2026-49353 — 9Router: Local-Only Access Gate Bypass in 9router via Host Header SpoofING
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 …
Published: 2026-07-15 · CVSS: 7.5 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7