SQL injection vulnerability in edituser.php in Xoops before 2.0.15 allows remote attackers to execute arbitrary SQL commands via the user_avatar parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/28586
http://www.vupen.com/english/advisories/2006/3402
http://www.securityfocus.com/bid/19720
http://www.securityfocus.com/archive/1/444419/100/0/threaded
http://www.hackers.ir/advisories/xoops.html
http://securityreason.com/securityalert/1461