apps/filemanager/handlers/upload/drop.php in Elefant CMS 2.0.3 performs a urldecode step too late in the "Cannot upload executable files" protection mechanism.
https://github.com/advisories/GHSA-pcf7-5974-vjh4
https://github.com/jbroadway/elefant/commit/afb3346e50b992bcba143660ca2149e563430e05