CVE-2021-43509: Simple Client Management System Project Simple Client Management System

Critical severity, CVSS 9.8. EPSS: 1.9% chance of exploitation in the next 30 days.

SQL Injection vulnerability exists in Sourcecodester Simple Client Management System 1.0 via the id parameter in view-service.php.

Affected products

• Simple Client Management System Project Simple Client Management System: version 1.0 only

Published 2022-02-01. Last modified 2026-06-17.