CVE-2020-28129: Admerc Gym Management System

Medium severity, CVSS 6.1. EPSS: 1% chance of exploitation in the next 30 days.

Stored Cross-site scripting (XSS) vulnerability in SourceCodester Gym Management System 1.0 allows users to inject and store arbitrary JavaScript code in index.php?page=packages via vulnerable fields 'Package Name' and 'Description'.

Affected products

• Admerc Gym Management System: version 1.0 only

Published 2020-11-17. Last modified 2026-06-17.