CVE-2025-41055: Apprain

Medium severity, CVSS 5.4. EPSS: 0.2% chance of exploitation in the next 30 days.

A vulnerability has been discovered in appRain CMF version 4.0.5, consisting of a stored authenticated XSS due to a lack of proper validation of user input, through the 'data[Addon][layouts]' and 'data[Addon][layouts_except]' parameters in /apprain/developer/addons/update/dialogs.

Affected products

• Apprain Apprain: version 4.0.5 only

Published 2025-09-04. Last modified 2026-06-17.