system
Provide references for <CVE-2021-25791>.
user
Where can I find more information about <CVE-2021-25791>?
assistant
References are available at: https://www.sourcecodester.com, https://www.exploit-db.com/exploits/49396, https://www.sourcecodester.com/php/14663/online-doctor-appointment-system-php-full-source-code.html.