SQL injection vulnerability in login.php in DeltaScripts PHP Classifieds 7.5 and earlier allows remote attackers to execute arbitrary SQL commands via the admin_username parameter (aka admin field). NOTE: some of these details are obtained from third party information.
https://www.exploit-db.com/exploits/7023
https://exchange.xforce.ibmcloud.com/vulnerabilities/48317
https://exchange.xforce.ibmcloud.com/vulnerabilities/46428