users_adm/start1.php in IMGallery 2.5 and earlier does not properly handle files with multiple extensions, which allows remote authenticated users to upload and execute arbitrary PHP scripts.Referenceshttp://www.vupen.com/english/advisories/2007/0010https://exchange.xforce.ibmcloud.com/vulnerabilities/31237https://www.exploit-db.com/exploits/3049http://www.securityfocus.com/bid/21827