CVE-2026-49353

9Router: Local-Only Access Gate Bypass in 9router via Host Header SpoofING

Published: Jul 15, 2026Updated: Jul 16, 2026 Sources: CVE List NVDCWE-290

7.5HIGH

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:HAttack Complexity

High

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:CScope

Changed

Impact

C:LConfidentiality

Low

I:HIntegrity

High

A:NAvailability

None

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Weaknesses

CWE-290

Affected Products

decolua

commercialaka 9router

9routerEmbedded

Networking Infrastructure / router-switch

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Initial Access

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References

https://github.com/decolua/9router/commit/5e1c1261368e06dced1cbc650684561b2c8844db

github.com

https://github.com/decolua/9router/commit/bb86808582067e4fc6f004508a919efb9970d1d5

github.com

https://github.com/decolua/9router/releases/tag/v0.4.46

github.com

and 1 more references View all →

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