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CVE-2026-124686— JavaScript Code Injection through kendo.init() in Kendo UI for jQuery

Quick assessment

Affected
Progress Software Kendo UI for jQuery
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 In Progress® Kendo® UI for jQuery 2026.4.1111 之前的版本中，当提供无效的 JSON 对象时， 方法会使用 编译 属性值。拥有低权限且能够控制这些属性值的攻击者，可以在用户加载或交互受影响页面时，通过声明式小部件初始化阶段注入并执行 JavaScript 代码。成功利用该漏洞将危及用户浏览器上下文中可访问数据的机密性和完整性。该问题最早在版本 2022.3.1109 中被报告，但首个受影响的发布版本尚未确定。

CVSS 5.4 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
Progress Software Kendo UI for jQuery 2022.3.1109< 2026.4.1111 affected
2026.4.1111 unaffected
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I. Basic Information for CVE-2026-124686

Vulnerability Information
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Vulnerability Title
JavaScript Code Injection through kendo.init() in Kendo UI for jQuery
Source: CVE Program / CVE List V5
Vulnerability Description
In Progress® Kendo® UI for jQuery versions prior to 2026.4.1111, kendo.init() compiles data-* attribute values with new Function when an invalid JSON object is supplied. An attacker with low privileges who can control these attribute values can inject JavaScript that executes during declarative widget initialization when a user loads or interacts with an affected page. Successful exploitation can compromise the confidentiality and integrity of data accessible in the user's browser context. The issue was reported in version 2022.3.1109; the first affected release has not been established.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
动态执行代码中指令转义处理不恰当(Eval注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Progress Software Kendo UI for jQuery 2022.3.1109 ~ 2026.4.1111 -

II. Public POCs for CVE-2026-124686

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III. Intelligence Information for CVE-2026-124686

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Other References for CVE-2026-124686 (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-2026-106137 8.6 HIGH ClassFactory Race Condition and Retained Assembly Memory in Telerik UI for ASP.NET MVC
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

IV. Related Vulnerabilities

Same product: Kendo UI for jQuery
Same vendor: Progress Software
Same weakness: CWE-95