CVE-2026-124696 Cross-Site Scripting in Kendo UI for jQuery Spreadsheet Sheet Names
Attackers influencing spreadsheet sheet names can inject event handlers that run JavaScript when users hover the Kendo UI SheetsBar menu button.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Harmful if only installed
- No
- Needs a specific call
- Yes
- Fix
- None listed
What is CVE-2026-124696?
CVE-2026-124696 is a high-severity cross-site scripting vulnerability in Progress Software Kendo UI for jQuery, published on 12 Nov 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
In Progress Kendo UI for jQuery, Spreadsheet sheet names are inserted into the SheetsBar menu button's data-sheet-name attribute without encoding. An attacker who can influence a sheet name can inject an event-handler attribute and execute JavaScript when a user hovers over the menu button. Successful exploitation may compromise the confidentiality and integrity of data available in the user's browser context. The first affected version is 2024.4.1112; the latest vulnerable version is 2026.3.1015. The issue is fixed in version 2026.4.1111.
Weakness: CWE-79
Which versions are affected by CVE-2026-124696?
An affected version is only exploitable if your software uses the vulnerable function or option. Many projects that include it are not exposed.
How do I fix CVE-2026-124696?
No fix has been published for CVE-2026-124696 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-124696 being exploited?
There is no known exploitation of CVE-2026-124696 in the wild and no public exploit code.
Sources
Also known as GHSA-8chf-gvmv-2mrh.