Multiple cross-site scripting (XSS) vulnerabilities in ownCloud 5.0.x before 5.0.6 allow remote authenticated users to inject arbitrary web script or HTML via the (1) tag parameter to apps/bookmarks/ajax/addBookmark.php or (2) dir parameter to apps/files/ajax/newfile.php, which is passed to apps/files/js/files.js.
http://owncloud.org/about/security/advisories/oC-SA-2013-021/