1181
It affected a server in the HipChat Cloud and was caused by a vulnerability in an unnamed , but popular , third - party library that HipChat.com used , the company said .
 ( discover vulnerability: affected,  a server: vulnerable system, the HipChat Cloud: vulnerable system, a vulnerability: vulnerability) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: phishing, data breach, ransom, discover vulnerability, patch vulnerability, Arguments type: vulnerable system, capabilities, vulnerability, number of victim, issues addressed, compromised data, damage amount, common vulnerabilities and exposures, victim, patch number, number of data, tool, discoverer, time, purpose, place, payment method, releaser, vulnerable system version, attacker, supported platform, patch, price, vulnerable system owner, trusted entity, attack pattern. 
Text: {0} 
Answer:
 ( discover vulnerability: affected,  a server: vulnerable system, the HipChat Cloud: vulnerable system, a vulnerability: vulnerability) 