CVE-2026-106137
ClassFactory Race Condition and Retained Assembly Memory in Telerik UI for ASP.NET MVC
Description
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`.
INFO
Published Date :
Nov. 11, 2026, 5:29 p.m.
Last Modified :
Nov. 11, 2026, 5:29 p.m.
Remotely Exploit :
Yes !
Source :
ProgressSoftware
Affected Products
The following products are affected by CVE-2026-106137
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | f9fea0b6-671e-4eea-8fde-31911902ae05 | ||||
| CVSS 3.1 | HIGH | MITRE-CVE |
Solution
- Update Telerik UI for ASP.NET MVC to version 2026.3.1015.
- Ensure aggregation endpoints require authentication.
- Restrict access to aggregation endpoints.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2026-106137 vulnerability anywhere in the article.