CVE-2026-124687 Cross-Site Scripting in DropDownButton and SplitButton Items in Kendo UI for jQuery
Attackers who influence id or target attributes of Kendo UI DropDownButton or SplitButton items can inject markup and event handlers.
- 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-2026-124687?
CVE-2026-124687 is a high-severity cross-site scripting vulnerability in Progress Software Kendo UI for jQuery, published on 11 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 versions from 2022.2.621 prior to 2026.4.1111 the DropDownButton and SplitButton allow markup injection through the `id` and `target` attributes. An attacker who can influence these item values can break out of the attributes and inject markup, including event handlers. The issue is fixed in 2026.4.1111.
Weakness: CWE-80
Which versions are affected by CVE-2026-124687?
An affected version is only exploitable if your software calls DropDownButton or SplitButton. Many projects that include it are not exposed.
How do I fix CVE-2026-124687?
No fix has been published for CVE-2026-124687 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-2026-124687 being exploited?
There is no known exploitation of CVE-2026-124687 in the wild and no public exploit code.
Sources
Also known as GHSA-vp66-qvrh-pgw5.