Vulnerability DatabaseCVE-2026-14865
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CVE-2026-14865
Published:July 22, 2026
Updated:August 06, 2026
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 Packages
Progress.Sitefinity.Web.UI (DOT_NET):
Affected version(s) >=2025.3.825.462 <2026.2.708.462
Fix Suggestion:
Update to version 2026.2.708.462
progress.sitefinity.web.ui (NUGET):
Affected version(s) >=2025.3.825.462 <2026.2.708.462
Fix Suggestion:
Update to version 2026.2.708.462
Related Resources (1)
https://www.telerik.com/products/aspnet-ajax/documentation/knowledge-base/kb-security-rlb-xxe-injection-client-state-cve-2026-14865
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CVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
CWE-776
EPSS
Base Score:
0.24