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An attacker could remotely exploit the same vulnerability in Vanilla Forums by sending a web request in which a payload is passed within the HOST header .
 ( discover vulnerability: could remotely exploit,  the same vulnerability: vulnerability, Vanilla Forums: vulnerable system, sending a web request: capabilities, a payload is passed within the HOST header: capabilities, An attacker: discoverer) 
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: could remotely exploit,  the same vulnerability: vulnerability, Vanilla Forums: vulnerable system, sending a web request: capabilities, a payload is passed within the HOST header: capabilities, An attacker: discoverer) 