Provide references for CVE-2021-28999.
Where can I find more information about CVE-2021-28999?
References are available at: https://seclists.org/fulldisclosure/2021/Mar/49, https://github.com/beerpwn/CVE/blob/master/cms_made_simple_2021/sqli_order_by/CMS-MS-SQLi-report.md.