The Standard Remember method in TikiWiki CMS/Groupware 3.x before 3.5 allows remote attackers to bypass access restrictions related to "persistent login," probably due to the generation of predictable cookies based on the IP address and User agent in userslib.php.
https://exchange.xforce.ibmcloud.com/vulnerabilities/56771
http://www.securityfocus.com/bid/38608
http://tikiwiki.svn.sourceforge.net/viewvc/tikiwiki?view=rev&revision=25196
http://secunia.com/advisories/38882
http://info.tikiwiki.org/article86-Tiki-Announces-3-5-and-4-2-Releases