# CVE-2026-106149: Progress Kendo UI for jQuery Menu component stored XSS

Source: https://junglewise.ai/threats/cve-2026-106149-in-progress-kendo-ui-for-jquery-prior-to-v2026-3-1015-the-menu  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-15. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-106149 · Severity: medium · CVSS 5.4 · Published 2026-10-15

Progress Kendo UI for jQuery is a library that provides interactive UI components for web applications. The Menu component has a vulnerability where an attacker who can control data in the menu's data source can inject malicious JavaScript that executes when users interact with the menu, potentially stealing sensitive information or performing unauthorized actions on the user's behalf.

Technologies: [Progress Kendo UI for jQuery](https://junglewise.ai/threats/technologies/kendo-ui-for-jquery). Vendors: [Progress](https://junglewise.ai/threats/vendors/progress).

## Quick answers

**Is CVE-2026-106149 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-106149 being exploited in the wild.

**How severe is CVE-2026-106149?** Medium severity, with a CVSS score of 5.4, published 15 October 2026.

**Which products and versions are affected?** Progress Kendo UI for jQuery prior to 2026.3.1015.

**Is there a fix for CVE-2026-106149?** Yes: fixed in 2026.3.1015. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-106149 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-106149?** Check whether you run Progress Kendo UI for jQuery at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in 2026.3.1015

## Technical details

The Menu component's rendering functions (itemCssAttributes, imageCssAttributes, contentCssAttributes) concatenate dataSource field values into HTML attribute strings without sanitization, allowing injection of event-handler attributes (CWE-80). An authenticated attacker who can control dataSource values can inject payload like onclick= to achieve arbitrary JavaScript execution when users interact with the menu. A fix is available in version 2026.3.1015 and later.

## Affected products

- Progress Kendo UI for jQuery prior to 2026.3.1015

## Timeline

- 2026-10-15: disclosed
- 2026-10-14: advisory

## References

- [https://www.telerik.com/kendo-jquery-ui/documentation/knowledge-base/kb-security-menu-xss-cve-2026-106149](https://www.telerik.com/kendo-jquery-ui/documentation/knowledge-base/kb-security-menu-xss-cve-2026-106149)

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