CVE-2026-49353

HighCVSS 7.5/10Last modified Oct 24, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:N

Weakness enumeration

CWE-290

Affected software

No affected versions have been published.

Timeline

Published: Jul 15, 2026
Last modified: Oct 24, 2026
NVD status: Deferred

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