Progress SoftwareCVE-2026-14865

Progress Software Telerik UI for ASP.NET AJAX: denial of service

CVE-2026-14865 · Published Jul 22, 2026 · updated Aug 6, 2026

Medium5.3

Fix: upgrade to 2026.2.708 or later

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 versions

Package	Affected	Fixed in
Telerik UI for ASP.NET AJAX Product	>= 2009.1.314, < 2026.2.708	2026.2.708

Details and references

CVSS 3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Severity from: the vendor (its own CVE record or advisory)
Weakness: CWE-776

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