Affected: Progress Software Kendo UI for jQuery

In Progress Kendo UI for jQuery versions 2026.3.1015 up to, but not including, 2026.4.1110, the Grid and TreeList column-reorder drag clue reparses header text as HTML. An attacker who can influence a column field or title used by an affected application can cause JavaScript to execute when a user drags a column header while column reordering is enabled. Successful exploitation may compromise the confidentiality and integrity of data available in the user's browser context. The first affected release has not been established.