In Progress Kendo UI for jQuery Form, the items[].hint option is documented as a string but is rendered as HTML. An attacker who can influence a Form item's hint can cause attacker-controlled markup to execute as JavaScript when a user views the rendered form. Successful exploitation may compromise the confidentiality and integrity of data available in the user's browser context. The first affected version is 2020.2.513; the latest vulnerable version is 2026.3.1015. The issue is fixed in version 2026.4.1111.