WeGIA vulnerable to Open Redirect in endpoint 'control.php' parameter 'nextPage'

WeGIA is an open source web manager with a focus on the Portuguese language and charitable institutions. An Open Redirect vulnerability exists in the web application prior to version 3.4.5. The control.php endpoint allows to specify an arbitrary URL via the `nextPage` parameter, leading to an uncontrolled redirection. Version 3.4.5 contains a fix for the issue.