CVE-2026-6022: Progress Telerik UI For ASP.NET AJAX

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

In Progress® Telerik® UI for AJAX prior to 2026.1.421, RadAsyncUpload contains an uncontrolled resource consumption vulnerability that allows file uploads to exceed the configured maximum size due to missing cumulative size enforcement during chunk reassembly, leading to disk space exhaustion.

Affected products

• Progress Telerik UI For ASP.NET AJAX: before 2026.1.421 (fixed in 2026.1.421)

Published 2026-04-22. Last modified 2026-06-17.