# CVE-2026-124696: Progress Kendo UI for jQuery Spreadsheet XSS in sheet names

Source: https://junglewise.ai/threats/cve-2026-124696-in-progress-kendo-ui-for-jquery-spreadsheet-sheet-names-are  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-12. Updated: 2026-11-12  
License: CC BY 4.0 with a link back

CVE-2026-124696 · Severity: high · CVSS 7.1 · Published 2026-11-12

Kendo UI for jQuery is a web component library used to build interactive spreadsheet applications. An attacker who can control spreadsheet sheet names can inject malicious code that executes in a user's browser when they hover over the sheet menu, potentially stealing data or taking over the user's session.

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-2026-124696 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-124696 being exploited in the wild.

**How severe is CVE-2026-124696?** High severity, with a CVSS score of 7.1, published 12 November 2026.

**Which products and versions are affected?** Progress Kendo UI for jQuery 2024.4.1112 through 2026.3.1015.

**Is there a fix for CVE-2026-124696?** Yes: fixed in 2026.4.1111. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-124696 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-124696?** 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 2026.4.1111

## Technical details

The vulnerability is a cross-site scripting (XSS) flaw in the Spreadsheet component where sheet names are inserted into the SheetsBar menu button's data-sheet-name attribute without HTML encoding. An attacker can inject event-handler attributes (e.g., onmouseover) into the sheet name; when a user hovers over the menu button, the injected JavaScript executes in the user's browser context. The attack requires the ability to control or influence sheet names and user interaction (hovering).

## Affected products

- Progress Kendo UI for jQuery 2024.4.1112 through 2026.3.1015

## Timeline

- 2026-11-12: disclosed

## References

- [https://www.telerik.com/kendo-jquery-ui/documentation/knowledge-base/kb-security-kendo-spreadsheet-sheet-names-xss-cve-2026-124696](https://www.telerik.com/kendo-jquery-ui/documentation/knowledge-base/kb-security-kendo-spreadsheet-sheet-names-xss-cve-2026-124696)

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