Multiple PHP remote file inclusion vulnerabilities in TalkBack 2.2.7 allow remote attackers to execute arbitrary PHP code via a URL in the (1) language_file parameter to (a) comments-display-tpl.php and (b) addons/separate-comments-mod/my-comments-display-tpl.php and the (2) config[comments_form_tpl] parameter to comments-display-tpl.php.
https://www.exploit-db.com/exploits/4640
https://exchange.xforce.ibmcloud.com/vulnerabilities/38597
https://exchange.xforce.ibmcloud.com/vulnerabilities/38596
http://www.vupen.com/english/advisories/2007/3963
http://www.securityfocus.com/bid/26520
http://www.securityfocus.com/archive/1/485662/100/100/threaded
http://www.securityfocus.com/archive/1/484045/100/0/threaded
http://www.scripts.oldguy.us/forums/index.php/topic%2C290.0.html