The Method method in WikkaWiki (Wikka Wiki) before 1.1.6.2 calls the strstr and strrpos functions with the wrong argument order, which allows remote attackers to bypass intended access restrictions and access arbitrary PHP files.
SQL injection vulnerability in actions/usersettings/usersettings.php in WikkaWiki 1.3.1 and 1.3.2 allows remote attackers to execute arbitrary SQL commands via the default_comment_display parameter in an update action.