Hosting Controller 6.1 Hotfix 1.9 and earlier allows remote attackers to register arbitrary users via a direct request to addsubsite.asp with the loginname and password parameters set.
admin_setup.php in paNews 2.0.4b allows remote attackers to inject arbitrary PHP code via the (1) $form[comments] or (2) $form[autoapprove] parameters, which are written to config.php.