Joomla! is a famous content management system (CWS), which enables to build websites and powerful online applications. In Joomla 1.5.12, TinyBrowser allows the upload of files on the romote server. By renaming the uploaded file this vulnerability can be used to upload/execute code on the affected system. This rule supports to defend the A6: Vulnerable and Outdated Components of OWASP Top 10 - 2021. Other reference:None