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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
NVD MITRE
EPSS Score
0.4%
Top 72.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

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

AV:NAC:HPR:NUI:NS:CC:LI:HA:N
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
View detailed technique mapping

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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