Joomla! Extension 'iCagenda' 3.2.1 < 3.9.15 / 4.x < 4.0.8 Arbitrary Files Upload

The version of the iCagenda extension for the Joomla! application running on the remote host is 3.2.1 prior to 3.9.15 or 4.x prior to 4.0.8. It is, therefore, affected by an arbitrary files upload vulnerability in the file attachment feature, ultimately resulting in PHP code upload and execution...