Oracle Vulnerability in Telerik UI for AJAX Affecting Client-State Processing
CVE-2026-13182

7.5HIGH

Key Information:

Vendor

Progress Software
Status
Telerik Ui For Asp.net Ajax
Vendor
CVE Published:
22 July 2026

What is CVE-2026-13182?

The Telerik UI for AJAX contains a vulnerability in RadAsyncUpload's client-state processing. Prior to version v2026.2.708, the framework distinguishes between decrypt failures and invalid JSON parse failures. This could enable remote attackers to exploit the difference, acting as an oracle that exposes sensitive metadata values crucial for application security.

Affected Version(s)

Telerik UI for ASP.NET AJAX 2010.1.309 < 2026.2.708

References

https://www.telerik.com/products/aspnet-ajax/documentatio...
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Marcio Almeida of TantoSec
.