CVE-2021-47732: Cmsimple

Medium severity, CVSS 6.1. EPSS: 0.3% chance of exploitation in the next 30 days.

CMSimple 5.2 contains a stored cross-site scripting vulnerability in the Filebrowser External input field that allows attackers to inject malicious JavaScript. Attackers can place unfiltered JavaScript code that executes when users click on Page or Files tabs, enabling persistent script injection.

Affected products

• Cmsimple Cmsimple: version 5.2 only

Published 2025-12-23. Last modified 2026-06-17.