What’s Vulnerable › Vulnerabilities
CVE-2026-13182: RadAsyncUpload Client-State Decrypt-vs-Parse Oracle Vulnerability in Telerik UI for ASP.NET AJAX
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-07-22 · updated 2026-10-24
- Weakness: CWE-209
Description
In Progress® Telerik® UI for AJAX prior to v2026.2.708, RadAsyncUpload client-state processing can distinguish decrypt failures from invalid-JSON parse failures, creating an oracle that reveals protected metadata values to remote attackers.
Affected products
- Progress Software Telerik UI for ASP.NET AJAX: from 2010.1309 before 2026.2.708 — fixed in 2026.2.708
How to fix
Upgrade to a fixed version: Progress Software Telerik UI for ASP.NET AJAX 2026.2.708. Check the vendor advisory for mitigations.
References
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