CVE-2026-49353

EUVD-2026-44811
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Common Weakness Enumeration
References
https://github.com/decolua/9router/commit/5e1c1261368e06dced1cbc650684561b2c8844db
https://github.com/decolua/9router/commit/bb86808582067e4fc6f004508a919efb9970d1d5
https://github.com/decolua/9router/releases/tag/v0.4.46
https://github.com/decolua/9router/security/advisories/GHSA-6g2f-w7g3-77vf