Multiple SQL injection vulnerabilities in Unak CMS 1.5 RC2 and earlier allow remote attackers to execute arbitrary SQL commands via the (1) u_a or (2) u_s parameters.
https://exchange.xforce.ibmcloud.com/vulnerabilities/26895
http://www.vupen.com/english/advisories/2006/2116
http://www.securityfocus.com/bid/18253