decolua 9router up to 0.3.47 Administrative API Endpoint /api authorization

Summaryinfo

A vulnerability described as critical has been identified in decolua 9router up to 0.3.47. This affects an unknown function of the file /api of the component Administrative API Endpoint. The manipulation results in authorization. This vulnerability was named CVE-2026-5842. The attack may be performed from remote. In addition, an exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in decolua 9router up to 0.3.47. It has been classified as critical. Affected is an unknown code block of the file /api of the component Administrative API Endpoint. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. This is going to have an impact on confidentiality, integrity, and availability.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-5842. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known.

The exploit is shared for download at github.com. It is declared as proof-of-concept.

Upgrading to version 0.3.75 eliminates this vulnerability. The upgrade is hosted for download at github.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-20853). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Router Operating System

Vendor

• decolua

Name

• 9router

Version

• 0.3.0
• 0.3.1
• 0.3.2
• 0.3.3
• 0.3.4
• 0.3.5
• 0.3.6
• 0.3.7
• 0.3.8
• 0.3.9
• 0.3.10
• 0.3.11
• 0.3.12
• 0.3.13
• 0.3.14
• 0.3.15
• 0.3.16
• 0.3.17
• 0.3.18
• 0.3.19
• 0.3.20
• 0.3.21
• 0.3.22
• 0.3.23
• 0.3.24
• 0.3.25
• 0.3.26
• 0.3.27
• 0.3.28
• 0.3.29
• 0.3.30
• 0.3.31
• 0.3.32
• 0.3.33
• 0.3.34
• 0.3.35
• 0.3.36
• 0.3.37
• 0.3.38
• 0.3.39
• 0.3.40
• 0.3.41
• 0.3.42
• 0.3.43
• 0.3.44
• 0.3.45
• 0.3.46
• 0.3.47

Website

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

CPE 2.3info

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CPE 2.2info

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Entryinfo

Submitinfo

Accepted

• Submit #790003: 9Router Router 0.3.47-0.3.32 Authorization Bypass (by cyberthoth)

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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