CVE-2026-49353

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 4.7

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

References

Link	Resource
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
https://github.com/decolua/9router/security/advisories/GHSA-6g2f-w7g3-77vf

Configurations

No configuration.

History

No history.

Information

Published : 2026-07-15 21:16

Updated : 2026-07-16 16:19

NVD link : CVE-2026-49353

Mitre link : CVE-2026-49353

CVE.ORG link : CVE-2026-49353

JSON object : View

Products Affected

No product.

CWE

CWE-290

Authentication Bypass by Spoofing

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