CVE-2026-18672 RadImageEditor ClientState Unauthenticated Arbitrary File Read Vulnerability in Telerik UI for ASP.NET AJAX

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...