Cross-site scripting (XSS) vulnerability in Apache Struts before 2.3.20.
https://struts.apache.org/docs/s2-025.html
https://security.netapp.com/advisory/ntap-20180629-0003/
https://bugzilla.redhat.com/show_bug.cgi?id=1260087
http://www.securityfocus.com/bid/76625