Active PHP Bookmarks (APB) 1.1.01 allows remote attackers to execute arbitrary PHP code via (1) head.php, (2) apb_common.php, or (3) apb_view_class.php by modifying the APB_SETTINGS parameter to reference a URL on a remote web server that contains the code.
add_bookmark.php in Active PHP Bookmarks (APB) 1.1.01 allows remote attackers to add arbitrary bookmarks as other users using a modified auth_user_id parameter.