Kliqqi 3.0.0.5 allows CSRF with resultant Arbitrary File Upload because module.php?module=upload can be used to configure the uploading of .php files, and then modules/upload/upload_main.php can be used for the upload itself.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2016-1750
https://demo.ripstech.com/projects/kliqqi_3.0.0.5
https://blog.ripstech.com/2016/kliqqi-from-cross-site-request-forgery-to-code-execution/