Description
In Progress® Telerik® UI for AJAX prior to v2026.2.708, when Telerik.Upload.ConfigurationHashKey is absent and machineKey is not explicitly configured, upload metadata integrity protection may fall back to a predictable default key, enabling attackers to forge protected upload metadata and unlock further exploit chains.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Progress Software | Telerik UI for ASP.NET AJAX | 2010.1.309 – < 2026.2.708 | 2026.2.708 |