Invision Community IPS Community Suite before 4.5.4.2 allows SQL Injection via the Downloads REST API (the sortDir parameter in a sortBy=popular action to the GETindex() method in applications/downloads/api/files.php).
https://invisioncommunity.com/release-notes/
http://packetstormsecurity.com/files/160830/IPS-Community-Suite-4.5.4-SQL-Injection.html