Topcoder: Reflected XSS on https://apps.topcoder.com/wiki/page/

Summary: Hi : A reflected XSS occurs on https://apps.topcoder.com/wiki/pages/doeditattachment.action when editing wiki pages attachments. Steps To Reproduce: A user can add attachments on https://apps.topcoder.com/wiki/pages/viewpageattachments.action?pageId=165871793 a wiki page and can edit on...