CVE-2026-5842: decolua 9router Administrative API Endpoint api authorization

Severity: high (CVSS 7.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-09 · updated 2026-10-26
Weakness: CWE-285

Description

A security vulnerability has been detected in decolua 9router up to 0.3.47. The impacted element is an unknown function of the file /api of the component Administrative API Endpoint. The manipulation leads to authorization bypass. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 0.3.75 is sufficient to resolve this issue. It is suggested to upgrade the affected component.

Affected products

decolua 9router: 0.3.0, 0.3.1, 0.3.2, 0.3.3, 0.3.4, 0.3.5 (+42)

References

https://github.com/decolua/9router/
https://github.com/decolua/9router/issues/431
https://github.com/decolua/9router/issues/431#issuecomment-4140163867
https://github.com/decolua/9router/releases/tag/v0.3.75
https://github.com/deepcat1337/Free_Api_Exploit/tree/main
https://vuldb.com/submit/790003
https://vuldb.com/vuln/356298
https://vuldb.com/vuln/356298/cti

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