Cross-site scripting (XSS) vulnerability in templates/2k11/admin/entries.tpl in Serendipity before 2.0.1 allows remote authenticated editors to inject arbitrary web script or HTML via the serendipity[cat][name] parameter to serendipity_admin.php, when creating a new category.
blog.s9y.org/archives/263-Serendipity-2.0.1-released.html
packetstormsecurity.com/files/130838/Serendipity-CMS-2.0-Cross-Site-Scripting.html
www.openwall.com/lists/oss-security/2015/03/14/1
www.securityfocus.com/archive/1/534871/100/0/threaded
www.securitytracker.com/id/1031961
github.com/s9y/Serendipity/commit/a30886d3bb9d8eeb6698948864c77caaa982435d