CVE-2026-124691 Cross-Site Scripting in Kendo UI for jQuery Gantt Parent Dropdown
Attackers who influence task titles can run JavaScript in users' browsers via the Kendo UI Gantt task editor Parent dropdown.
- 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
- No
- Fix
- None listed
What is CVE-2026-124691?
CVE-2026-124691 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 Gantt, the task editor's Parent dropdown renders task titles as HTML. An attacker who can influence a task title shown in the dropdown can cause attacker-controlled markup to execute as JavaScript when a user opens or interacts with the task editor. Successful exploitation may compromise the confidentiality and integrity of data available in the user's browser context. The first affected version is 2020.3.915; 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-2026-124691?
An affected version is exposed as installed. No special setting or call is needed.
How do I fix CVE-2026-124691?
No fix has been published for CVE-2026-124691 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-2026-124691 being exploited?
There is no known exploitation of CVE-2026-124691 in the wild and no public exploit code.
Sources
Also known as GHSA-9hhv-8r66-23qv.