CVE-2026-55793: Craft CMS: Stored XSS via Structure entry title in table view

An Author-level control panel user can store a JavaScript payload in an entry title. When an admin, or any control panel user with saveEntries for the same Structure section, drags another entry under the poisoned entry in table view, the payload executes in the victim’s session.

The issue is exploitable because the title is escaped into data-title by the server, decoded again by the browser, read with jQuery .data('title'), and then concatenated into a new HTML string without attribute escaping.

Execution was verified with alert(document.domain). Impact was verified against an elevated admin session by changing the admin user’s email through users/save-user, then using the password-reset flow to take over the account.