SQL injection vulnerability in index.php in X7 Chat 2.0.5 and possibly earlier allows remote attackers to execute arbitrary SQL commands via the day parameter in a sm_window action.
https://www.exploit-db.com/exploits/4907
https://exchange.xforce.ibmcloud.com/vulnerabilities/39656
https://euvd.enisa.europa.eu/vulnerability/EUVD-2008-0289