CVE-2026-106137
ClassFactory Race Condition and Retained Assembly Memory in Telerik UI for ASP.NET MVC
In affected versions of Progress® Telerik® UI for ASP.NET MVC `2012.2.710` through `2026.3.811`, ClassFactory updates a shared class dictionary without exclusive write protection and emits non-collectible dynamic assemblies that remain loaded for the AppDomain's lifetime. The dictionary lookup and insertion are not atomic, and case variations in aggregate descriptors can produce distinct retained types even though member resolution is case-insensitive. An unauthenticated remote attacker can exploit this if the application exposes an aggregation endpoint that is reachable without authentication, by submitting concurrent or repeated crafted requests. These requests may corrupt dictionary state or increase CPU and memory use, potentially degrading availability. The issue is fixed in version `2026.3.1015`.
| CWE | CWE-362 CWE-401 |
| Vendor | progress software |
| Product | telerik ui for asp.net mvc |
| Published | Nov 11, 2026 |
Get instant alerts for progress software telerik ui for asp.net mvc
Be the first to know when new high vulnerabilities affecting progress software telerik ui for asp.net mvc are published — delivered to Slack, Telegram or Discord.
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H