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CVE Vulnerability Details :
CVE-2026-14865
PUBLISHED
More InfoOfficial Page
Assigner-ProgressSoftware
Assigner Org ID-f9fea0b6-671e-4eea-8fde-31911902ae05
View Known Exploited Vulnerability (KEV) details
Published At-22 Jul, 2026 | 13:45
Updated At-22 Jul, 2026 | 19:10
Rejected At-
▼CVE Numbering Authority (CNA)
XXE Denial of Service via RadLayoutBuilder Client State in Telerik UI for ASP.NET AJAX

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 Products
Vendor
Progress Software CorporationProgress Software
Product
Telerik UI for ASP.NET AJAX
Default Status
unaffected
Versions
Affected
  • From 2009.1.314 before 2026.2.708 (custom)
Problem Types
TypeCWE IDDescription
CWECWE-776CWE-776 Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
Type: CWE
CWE ID: CWE-776
Description: CWE-776 Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
Metrics
VersionBase scoreBase severityVector
3.15.3MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Version: 3.1
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Metrics Other Info
Impacts
CAPEC IDDescription
CAPEC-197CAPEC-197 Exponential Data Expansion
CAPEC ID: CAPEC-197
Description: CAPEC-197 Exponential Data Expansion
Solutions
Configurations
Workarounds
Exploits
Credits
finder
Marcio Almeida of TantoSec
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.telerik.com/products/aspnet-ajax/documentation/knowledge-base/kb-security-rlb-xxe-injection-client-state-cve-2026-14865
vendor-advisory
Hyperlink: https://www.telerik.com/products/aspnet-ajax/documentation/knowledge-base/kb-security-rlb-xxe-injection-client-state-cve-2026-14865
Resource:
vendor-advisory
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found