CVE-2026-13181
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Forced AsyncUploadTypeName Processing Leads to RCE in 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, forged upload metadata can influence AsyncUploadTypeName processing and trigger unsafe attacker-controlled type resolution, enabling remote code execution in affected deployments.

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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-2026-13181
EUVD
EUVD-2026-47686

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.

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Executive Summary

This vulnerability affects Progress Telerik UI for AJAX versions prior to v2026.2.708. Attackers can forge upload metadata to manipulate AsyncUploadTypeName processing, leading to unsafe type resolution and enabling remote code execution in affected systems.

Detection Guidance

To detect this vulnerability, check the version of Telerik UI for AJAX on your system. If it is prior to v2026.2.708, the system is vulnerable. Use commands like 'find' or 'dir' to locate Telerik assemblies and inspect version details.

Impact Analysis

An attacker could exploit this to execute arbitrary code on your server, potentially gaining full control over the affected application or system. This could lead to data breaches, system compromise, or further network infiltration.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating GDPR's data protection requirements and HIPAA's security rules. Organizations may face compliance penalties, legal consequences, and reputational damage if exploited.

Mitigation Strategies

Update Progress Telerik UI for AJAX to version 2026.2.708 or later to address the vulnerability. Disable RadAsyncUpload if not in use or restrict access to the component until patched.

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