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CVE-2026-106137— ClassFactory Race Condition and Retained Assembly Memory in Telerik UI for ASP.NET MVC

Quick assessment

Affected
Progress Software Telerik UI for ASP.NET MVC
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在受影响的 Progress® Telerik® UI for ASP.NET MVC 版本（从 到 ）中，ClassFactory 在更新共享类字典时未实施独占写保护，并生成了不可回收的动态程序集，这些程序集将在整个应用程序域（AppDomain）的生命周期内保持加载状态。字典的查找与插入操作不具备原子性，且聚合描述符中的大小写变体可能导致生成不同的保留类型，尽管成员解析本身是大小写不敏感的。如果应用程序暴露了无需身份验证即可访问的聚合端点，未认证的远程攻击者可通过提交并发或重复的精心构造请求来利用此漏洞。此类请

CVSS 8.6 · High

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
Progress Software Telerik UI for ASP.NET MVC 2012.2.710< 2026.3.1015 affected
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I. Basic Information for CVE-2026-106137

Vulnerability Information
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Vulnerability Title
ClassFactory Race Condition and Retained Assembly Memory in Telerik UI for ASP.NET MVC
Source: CVE Program / CVE List V5
Vulnerability 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`.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Progress Software Telerik UI for ASP.NET MVC 2012.2.710 ~ 2026.3.1015 -

II. Public POCs for CVE-2026-106137

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III. Intelligence Information for CVE-2026-106137

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Other References for CVE-2026-106137 (1)

Same Patch Batch · Progress Software · 2026-11-11 · 12 CVEs total

CVE-2026-106152 8.8 HIGH External Control of Configuration Setting in Telerik Report Server
CVE-2026-106156 8.6 HIGH Uncontrolled Resource Consumption in Telerik UI for ASP.NET Core Server-side Aggregation
CVE-2026-124687 7.1 HIGH Cross-Site Scripting in DropDownButton and SplitButton Items in Kendo UI for jQuery
CVE-2026-124688 7.1 HIGH Cross-Site Scripting via the spriteCssClass Field in Kendo UI for jQuery
CVE-2026-124690 7.1 HIGH Cross-Site Scripting During Kendo UI for jQuery Custom SVG Icon Sanitization
CVE-2026-124689 7.1 HIGH Cross-Site Scripting in Kendo UI for jQuery ActionSheet Header Labels
CVE-2026-124692 7.1 HIGH Cross-Site Scripting in Kendo UI for jQuery Grid and TreeList Column Reordering
CVE-2026-124694 7.1 HIGH Cross-Site Scripting in Kendo UI for jQuery PropertyGrid Values and Descriptions
CVE-2026-124693 7.1 HIGH Cross-Site Scripting in Kendo UI for jQuery PivotGrid Axis Chips
CVE-2026-106133 6.3 MEDIUM Incorrect Authorization in Telerik Report Server Web Report Designer
CVE-2026-124686 5.4 MEDIUM JavaScript Code Injection through kendo.init() in Kendo UI for jQuery

IV. Related Vulnerabilities

Same vendor: Progress Software
Same weakness: CWE-362