Provide references for CVE-2021-42664.
Where can I find more information about CVE-2021-42664?
References are available at: https://www.sourcecodester.com/php/13115/engineers-online-portal-php.html, http://packetstormsecurity.com/files/164618/Engineers-Online-Portal-1.0-SQL-Injection.html, https://github.com/TheHackingRabbi/CVE-2021-42664, https://www.exploit-db.com/exploits/50451.