CVE-2026-14865: Progress Telerik UI For ASP.NET AJAX

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

In Progress® Telerik® UI for AJAX prior to v2026.2.708, the internal LayoutBuilder control processes client-state XML without disabling DTD processing, allowing unauthenticated denial of service via recursive XML entity expansion.

Affected products

• Progress Telerik UI For ASP.NET AJAX: from 2009.31314, before 2026.2.708 (fixed in 2026.2.708)

Published 2026-07-22. Last modified 2026-08-06.