Vulnerability DatabaseCVE-2026-13188
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CVE-2026-13188
Published:July 22, 2026
Updated:August 06, 2026
In Progress® Telerik® UI for AJAX prior to v2026.2.708, DialogHandler request parameters may be tampered with, potentially altering dialog server-side behavior and enabling chained exploitation.
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-dialoghandler-parameters-tampering-CVE-2026-13188
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CVSS v4
Base Score:
8.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.9
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Insufficient Verification of Data Authenticity
CWE-345
EPSS
Base Score:
0.11