1192
Researchers from several German universities have checked the PHP codebases of over 64,000 projects on GitHub , and found 117 vulnerabilities that they believe have been introduced through the use of code from popular but insufficiently reviewed tutorials .
 GitHub: vulnerable system; 117 vulnerabilities: vulnerability; the PHP codebases: vulnerability; Researchers: discoverer; German universities: 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:
 GitHub: vulnerable system; 117 vulnerabilities: vulnerability; the PHP codebases: vulnerability; Researchers: discoverer; German universities: discoverer