2417
Initially , app makers fixed 23 of the 26 flaws , with Avast still lagging behind on three issues .
 ( patch vulnerability: fixed,  23 of the 26 flaws: vulnerability, app makers: releaser) 
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:
 ( patch vulnerability: fixed,  23 of the 26 flaws: vulnerability, app makers: releaser) 