Xenforo Stored Cross-Site Scripting Vulnerability in Smilie Categories

A stored cross-site scripting vulnerability has been identified in Xenforo version 2.2.13. This issue allows authenticated administrators to inject malicious scripts via the smilie category title parameter. When the admin panel is accessed, the injected script executes, potentially leading to further client-side attacks.

Impact

Exploitation of this vulnerability allows for stored cross-site scripting, where injected scripts are executed in the context of the user accessing the admin panel.

Reproduction

To reproduce this vulnerability, an authenticated administrator can create a smilie category and inject a script into the title parameter. Once the category is saved, the injected script will execute when the admin panel is loaded.