The WYSIWYG editor applet in activeWeb contentserver CMS before 5.6.2964 only filters malicious tags from articles sent to admin/applets/wysiwyg/rendereditor.asp, which allows remote authenticated users to inject arbitrary JavaScript via a request to admin/worklist/worklist_edit.asp.
ActiveWeb Contentserver CMS versions 5.6.2929 and below suffer from a design flaw where it performs client side content filtering to restrict javascript insertion.