Eval injection vulnerability in Tagger LE allows remote attackers to execute arbitrary PHP code via the query string in (1) tags.php, (2) sign.php, and (3) admin/index.php.
https://exchange.xforce.ibmcloud.com/vulnerabilities/28941
http://www.vupen.com/english/advisories/2006/3606
http://www.securityfocus.com/bid/20023
http://www.securityfocus.com/archive/1/446010/100/0/threaded