PT-2026-63406 · Progress · Telerik Ui For Asp.Net Ajax

Marcio Almeida · CVE-2026-14865 · Published 2026-07-22 · Updated 2026-07-22

NVD

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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.

Fix

XML Entity Expansion

Weakness Enumeration

CWE-776

Related Identifiers

CVE-2026-14865

Affected Products

Telerik Ui For Asp.Net Ajax

References · 2

• https://telerik.com/products/aspnet-ajax/documentation/knowledge-base/kb-security-rlb-xxe-injection-client-state-cve-2026-14865 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-14865 · Security Note