Apache Struts 2 before 2.3.14.3 allows remote attackers to execute arbitrary OGNL code via a request with a crafted value that contains both "${}" and "%{}" sequences, which causes the OGNL code to be evaluated twice.Referenceshttp://struts.apache.org/development/2.x/docs/s2-015.htmlhttps://cwiki.apache.org/confluence/display/WW/S2-015http://www.oracle.com/technetwork/topics/security/cpuoct2013-1899837.htmlhttp://www.securityfocus.com/bid/64758http://www.oracle.com/technetwork/topics/security/cpujan2014-1972949.html
