CVE-2026-13184highCWE-321

CVE-2026-13184: high-severity vulnerability in Progress Software Telerik UI for ASP.NET AJAX

RadAsyncUpload Default HMAC Key Fallback Vulnerability in Telerik UI for ASP.NET AJAX

Published

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.5epss 0.3%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Affected products
Progress Software · Telerik UI for ASP.NET AJAX
Related CVEs — Progress Software Telerik UI for ASP.NET AJAX

In the same product, most dangerous first.

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