Multiple SQL Injection vulnerabilities exist in Sourcecodester Simple Cashiering System (POS) 1.0 via the (1) Product Code in the pos page in cashiering. (2) id parameter in manage_products and the (3) t paramater in actions.php.
https://www.nu11secur1ty.com/2021/12/cve-2021-41492.html
https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-41492
https://3xpl017.blogspot.com/2021/09/multiple-sql-injections-in.html