Vulnerability · Published Oct 15, 2026 · Assigned by ProgressSoftware

CVE-2026-106150Cross-site Scripting (XSS) in Kendo UI for jQuery Splitter, Window, and Tooltip

Medium 5.4

In plain English

A medium-severity cross-site scripting in Kendo UI for jQuery from Progress Software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).

Severity (CVSS 3.1)5.4Medium

Exploit odds (30 days)0.2%top 94.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

In Progress® Kendo® UI for jQuery prior to 2026.3.1015, the Splitter and Window components starting with version 2011.2.804 and the Tooltip component starting with version 2013.1.319 construct iframe markup without properly sanitizing URL values or encoding the Window iframe title. An attacker with low privileges who can control these values can inject HTML attributes, including JavaScript event handlers, through an apostrophe in an iframe URL or a crafted title. When a user interacts with the affected component, injected JavaScript can execute in the user's browser context, compromising the confidentiality and integrity of accessible data.

Affected products (as reported)

Vendor	Product	Versions
Progress Software	Kendo UI for jQuery	2013.1.319 – before 2026.3.10152011.2.804 – before 2026.3.1015

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

References

https://www.telerik.com/kendo-jquery-ui/documentation/knowledge-base/kb-security-cross-site-scripting-splitter-window-tooltip-cve-2026-106150 vendor-advisory