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Progress Software Corporation
Patches for UI for ASP.NET AJAX 2026
Windows
1 patches available
The Telerik UI for ASP.NET AJAX suite includes more than 120 versatile and performance-optimized ASP.NET Web Forms components that help you build high-quality, professional line-of-business projects. The suite was formerly known as RadControls for ASP.NET AJAX, where RAD stands for Rapid Application Development.nnFrom the leading AJAX data grid to the full-featured HTML Editor used by Microsoft on sites like MSDN, Telerik UI for ASP.NET AJAX provides all the building blocks to maximize productivity and build richer, slicker and better-performing applications with ease.
UI for ASP.NET AJAX 2026 Version 26.1.225.0
Release Date
2/25/2026
Bug Fix?
Yes
Minor Release?
No
Patch Notes
Telerik UI for ASP.NET AJAX 2026.1.225$$$February 25; 2026$$$$$$Security$$$FIXED$$$Addressed CVE-2026-2878$$$External jQuery scripts are now loaded through a Telerik Handler that ensures correct load order and restricts sources to trusted CDN hosts$$$Common$$$FIXED$$$ReferenceError: kendo is not defined in version 2026 Q1$$$Editor$$$FIXED$$$Duplicate toolbars rendered when ToolProviderID is used with programmatically added Tools$$$Gantt$$$FIXED$$$RadGantt throws: Uncaught ReferenceError: kendo is not defined$$$HtmlChart$$$FIXED$$$The HtmlChart throws: Uncaught ReferenceError: kendo is not defined$$$Uncaught TypeError: Cannot read properties of undefined (reading toLowerCase)$$$SearchBox$$$FIXED$$$Fixed the EnableAriaSupport ClientPropertyName mismatch$$$SmartPasteButton$$$NEW$$$Added Visual Studio Designer support for RadSmartPasteButton$$$Added RenderMode support for RadSmartPasteButton$$$Spreadsheet$$$FIXED$$$Spreadsheet throws: Uncaught ReferenceError: kendo is not defined
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