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A popular version of the open source Magento ecommerce platform is vulnerable to a zero - day remote code execution vulnerability , putting as many as 200,000 online retailers at risk .
 ( discover vulnerability: is vulnerable,  a zero - day remote code execution vulnerability: vulnerability, the open source Magento ecommerce platform: vulnerable system) 
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: is vulnerable,  a zero - day remote code execution vulnerability: vulnerability, the open source Magento ecommerce platform: vulnerable system) 