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Mejri said he contacted Apple ’s Product Security Team about the issues on Dec. 15 and acknowledged that the vulnerability should be able to be resolved on the server - side without performing any required end - user interaction or updates .
 Mejri: discoverer
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:
 Mejri: discoverer