CVE-2026-13187
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Dialog Tampering in Progress Telerik UI for AJAX

Publication date: 2026-07-22

Last updated on: 2026-07-22

Assigner: Progress Software Corporation

Description
In Progress® Telerik® UI for AJAX prior to v2026.2.708, DialogHandler provider type input may be tampered with, potentially altering dialog processing and enabling chained exploitation.

CVSS Scores

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Meta Information

Published
2026-07-22
Last Modified
2026-07-22
Generated
2026-07-22
AI Q&A
2026-07-22
EPSS Evaluated
N/A
NVD
CVE-2026-13187
EUVD
EUVD-2026-47692

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
progress telerik_ui_for_ajax to 2026.2.708 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-470 The product uses external input with reflection to select which classes or code to use, but it does not sufficiently prevent the input from selecting improper classes or code.

Attack-Flow Graph

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Executive Summary

This vulnerability exists in Progress Telerik UI for AJAX versions prior to v2026.2.708. It involves tampering with the DialogHandler provider type input, which could alter how dialogs are processed. This manipulation may enable further exploitation through a chain of attacks.

Detection Guidance

To detect this vulnerability, inspect network traffic for tampered DialogHandler provider type inputs in Telerik UI for AJAX requests. Check server logs for unusual dialog processing patterns or unexpected provider type modifications. Validate that all DialogHandler requests use expected provider types and parameters.

Impact Analysis

An attacker could exploit this to manipulate dialog processing, potentially leading to unauthorized actions or data exposure. The high CVSS score (8.1) indicates significant impact on confidentiality, integrity, and availability of the system.

Compliance Impact

This vulnerability could lead to data breaches or unauthorized access, violating GDPR's integrity and confidentiality principles and HIPAA's security requirements. Non-compliance risks include fines and legal penalties.

Mitigation Strategies

Update Progress Telerik UI for AJAX to version 2026.2.708 or later to address the DialogHandler provider type tampering vulnerability.

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