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CVE-2026-124688— Cross-Site Scripting via the spriteCssClass Field 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 2026.4.1111 版本之前的 In Progress® Kendo® UI for jQuery 中，TabStrip、PanelBar 和 Menu 组件支持将数据源（dataSource）字段映射到 属性。如果攻击者能够控制所映射的数据，则可以突破该属性的限制并注入标记（包括事件处理程序属性）。当受害者加载渲染了受影响组件的页面时，注入的 JavaScript 将在应用程序的源上下文中执行，从而允许攻击者访问受害者已认证会话中的数据及可执行的操作。

CVSS 7.1 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
Progress Software Kendo UI for jQuery 2012.1.322< 2026.4.1111 affected
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I. Basic Information for CVE-2026-124688

Vulnerability Information
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Vulnerability Title
Cross-Site Scripting via the spriteCssClass Field in Kendo UI for jQuery
Source: CVE Program / CVE List V5
Vulnerability Description
In Progress® Kendo® UI for jQuery prior to 2026.4.1111 the TabStrip, PanelBar, and Menu widgets support mapping a dataSource field to `spriteCssClass`. If an attacker can control the mapped data, they can break out of the attribute and inject markup, including event-handler attributes. The resulting JavaScript executes in the application's origin when a victim loads a page that renders the affected widget, allowing access to data and actions available in the victim's authenticated session.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
Web页面中脚本相关HTML标签转义处理不恰当(基本跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Progress Software Kendo UI for jQuery 2012.1.322 ~ 2026.4.1111 -

II. Public POCs for CVE-2026-124688

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-124688

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Other References for CVE-2026-124688 (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-2026-124690 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 product: Kendo UI for jQuery
Same vendor: Progress Software
Same weakness: CWE-80