Cianet ONU GW24AC Cross-Site Scripting Vulnerability in Login Component

A cross-site scripting (XSS) vulnerability has been identified in the Cianet ONU GW24AC model, in versions prior to 20250127. The issue arises in the Login component, where the browserLang parameter can be manipulated to inject malicious scripts. This vulnerability can be exploited remotely and requires user interaction.

Impact

Exploitation of this vulnerability allows for cross-site scripting, where an attacker can inject malicious scripts that are executed in the context of the user's browser.

Reproduction

To reproduce this vulnerability, log into the application and navigate to the login page. Use a tool like Burp Suite to intercept the login request. Modify the browserLang parameter to include a script payload, then send the request. The injected script will execute, demonstrating the cross-site scripting vulnerability.