CVE-2021-43505: Simple Client Management System Project Simple Client Management System

Medium severity, CVSS 5.4. EPSS: 0.6% chance of exploitation in the next 30 days.

Multiple Cross Site Scripting (XSS) vulnerabilities exist in Ssourcecodester Simple Client Management System v1 via (1) Add new Client and (2) Add new invoice.

Affected products

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

Published 2022-03-31. Last modified 2026-06-17.