CVE-2026-106158 Cross-Site Scripting via Scheduler Resource Colors in Kendo UI for jQuery

Medium 4.7 Published 15 Oct 2026 Updated 15 Oct 2026

Attackers can inject JavaScript via resource colors in Kendo UI Scheduler views, compromising user data confidentiality and integrity.

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
Fix: None listed

What is CVE-2026-106158?

CVE-2026-106158 is a medium-severity cross-site scripting vulnerability in Progress Software Kendo UI for jQuery, published on 15 Oct 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, in v2026.3.811 and earlier, the Scheduler Day, Timeline, Month, and Agenda views insert resource color values into quoted event wrapper attributes without proper encoding. An attacker who can control a resource color can inject additional HTML attributes, including event handlers, and execute JavaScript in a user's browser when the affected event is interacted with. Successful exploitation can compromise the confidentiality and integrity of data accessible to the affected application. The earliest affected version has not been confirmed. This issue is fixed in version 2026.3.1015.

Weakness: CWE-80

Which versions are affected by CVE-2026-106158?

It affects 1 product.

Products include Progress Kendo Ui.

How do I fix CVE-2026-106158?

No fix has been published for CVE-2026-106158 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-2026-106158 being exploited?

There is no known exploitation of CVE-2026-106158 in the wild and no public exploit code.

Sources

Also known as GHSA-2qr6-v4pq-wrr6.