A Remote Code Execution (RCE) vulnerability exists in Simple Client Management System 1.0 in create.php due to the failure to validate the extension of the file being sent in a request.
Multiple Cross Site Scripting (XSS) vulnerabilities exist in Ssourcecodester Simple Client Management System v1 via (1) Add new Client and (2) Add new invoice.
Simple Client Management System v1.0 was discovered to contain a SQL injection vulnerability via the id parameter in the manage_client endpoint. This vulnerability allows attackers to dump the application's database via crafted HTTP requests.
Simple Subscription Website v1.0 was discovered to contain a SQL injection vulnerability via the id parameter in the apply endpoint. This vulnerability allows attackers to dump the application's database via crafted HTTP requests.