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We looked into past several Remote Code Execution ( RCE ) vulnerabilities reported in Apache Struts , and observed that in most of them , attackers have used Object Graph Navigation Language ( OGNL ) expressions .
 Apache Struts: vulnerable system; Remote Code Execution ( RCE ) vulnerabilities: vulnerability
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: discover vulnerability 
  Option: vulnerable system owner, vulnerability, capabilities, time, vulnerable system version, discoverer, common vulnerabilities and exposures, supported platform, vulnerable system 
Text: {0} 
Answer:
 Apache Struts: vulnerable system; Remote Code Execution ( RCE ) vulnerabilities: vulnerability