Unrestricted file upload vulnerability in Element-IT Ultimate Uploader 1.3 allows remote attackers to execute arbitrary code by uploading a file with an executable extension, then accessing it via a direct request to the file in upload/.
https://exchange.xforce.ibmcloud.com/vulnerabilities/54972
https://euvd.enisa.europa.eu/vulnerability/EUVD-2009-4780
http://www.exploit-db.com/exploits/10578