1159
Users of Struts 2.3 are advised to upgrade to 2.3.35 ; users of Struts 2.5 need to upgrade to 2.5.17 .
 patch vulnerability: upgrade
Please tell me event type and its trigger word from given type options. Output format is "type: trigger".  Option: phishing, data breach, ransom, discover vulnerability, patch vulnerability 
Text: {0} 
Answer:
 patch vulnerability: upgrade