Unrestricted file upload vulnerability in pages/download.php in Iamma Simple Gallery 1.0 and 2.0 allows remote attackers to execute arbitrary PHP code by uploading a file with an executable extension, then accessing it via a direct request to the file in the uploads directory.
https://www.exploit-db.com/exploits/6803
https://exchange.xforce.ibmcloud.com/vulnerabilities/46041