CVE-2026-124686 JavaScript Code Injection through kendo.init() in Kendo UI for jQuery
Low-privileged attackers controlling data attributes can inject JavaScript via kendo.init() in Kendo UI for jQuery, compromising user data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- 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-2026-124686?
CVE-2026-124686 is a medium-severity code injection vulnerability in Progress Software Kendo UI for jQuery, published on 11 Nov 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
In Progress® Kendo® UI for jQuery versions prior to 2026.4.1111, kendo.init() compiles data-* attribute values with new Function when an invalid JSON object is supplied. An attacker with low privileges who can control these attribute values can inject JavaScript that executes during declarative widget initialization when a user loads or interacts with an affected page. Successful exploitation can compromise the confidentiality and integrity of data accessible in the user's browser context. The issue was reported in version 2022.3.1109; the first affected release has not been established.
Weakness: CWE-95
Which versions are affected by CVE-2026-124686?
An affected version is only exploitable if your software calls kendo.init(). Many projects that include it are not exposed.
How do I fix CVE-2026-124686?
No fix has been published for CVE-2026-124686 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-124686 being exploited?
There is no known exploitation of CVE-2026-124686 in the wild and no public exploit code.
Sources
Also known as GHSA-rjfx-524j-r2fc.