CVE-2026-18672: Progress Software Telerik UI For ASP.NET AJAX

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

In Progress® Telerik® UI for AJAX prior to v2026.3.812, insufficient validation of client-supplied state in RadImageEditor may allow an attacker to influence which file is returned by the control's image cache, potentially exposing file contents outside the intended image directories.

Affected products

• Progress Software Telerik UI For ASP.NET AJAX: from 2011.2.712, before 2026.3.812 (fixed in 2026.3.812)

Published 2026-09-02. Last modified 2026-09-08.