decolua 9router up to 0.4.45 Dashboard src/dashboardGuard.js isLocalRequest improper authentication

Summaryinfo

A vulnerability was found in decolua 9router up to 0.4.45. It has been classified as very critical. The impacted element is the function isLocalRequest of the file src/dashboardGuard.js of the component Dashboard. Performing a manipulation results in improper authentication. This vulnerability is cataloged as CVE-2026-49353. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in decolua 9router up to 0.4.45. It has been classified as very critical. This affects the function isLocalRequest of the file src/dashboardGuard.js of the component Dashboard. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-49353 since 05/29/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/15/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Router Operating System

Vendor

• decolua

Name

• 9router

Version

• 0.4.0
• 0.4.1
• 0.4.2
• 0.4.3
• 0.4.4
• 0.4.5
• 0.4.6
• 0.4.7
• 0.4.8
• 0.4.9
• 0.4.10
• 0.4.11
• 0.4.12
• 0.4.13
• 0.4.14
• 0.4.15
• 0.4.16
• 0.4.17
• 0.4.18
• 0.4.19
• 0.4.20
• 0.4.21
• 0.4.22
• 0.4.23
• 0.4.24
• 0.4.25
• 0.4.26
• 0.4.27
• 0.4.28
• 0.4.29
• 0.4.30
• 0.4.31
• 0.4.32
• 0.4.33
• 0.4.34
• 0.4.35
• 0.4.36
• 0.4.37
• 0.4.38
• 0.4.39
• 0.4.40
• 0.4.41
• 0.4.42
• 0.4.43
• 0.4.44
• 0.4.45

Website

• Product: https://github.com/decolua/9router/

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