CVE-2026-19219: Progress Software Telerik UI For ASP.NET AJAX

High severity, CVSS 8.1. EPSS: 0.2% chance of exploitation in the next 30 days.

In Progress® Telerik® UI for AJAX prior to v2026.3.812, insufficient integrity protection of dialog request parameters used by the RadEditor file browser may allow an attacker who has obtained certain application encryption key material to alter the folders the file browser reads from, writes to, and uploads into, potentially resulting in remote code execution.

Affected products

• Progress Software Telerik UI For ASP.NET AJAX: from 2011.2.712, before 2026.3.812 (fixed in 2026.3.812)

Published 2026-09-02. Last modified 2026-09-08.