Provide references for CVE-2021-28423.
Where can I find more information about CVE-2021-28423?
References are available at: https://phpgurukul.com/teachers-record-management-system-using-php-and-mysql/, https://nhattruong.blog/2021/05/22/cve-2021-28423-teachers-record-management-system-1-0-searchdata-error-based-sql-injection-authenticated/, https://www.exploit-db.com/exploits/50018, https://packetstormsecurity.com/files/163172/Teachers-Record-Management-System-1.0-SQL-Injection.html.