CVE-2026-55793
MediumCVSS 5.9Exploitation Probability (EPSS)
Low risk33th percentile — higher than 33% of all known CVEs
Summary
In Craft CMS versions 5.0.0-RC1 through 5.9.22, an author-level user can inject malicious JavaScript into an entry title. When an admin drags another entry under the poisoned entry in table view, the payload executes in the victim's session.
Risk Assessment
An attacker with an author account can hijack an admin session, steal data, or perform unauthorized actions in the control panel.
Recommendation
Immediately update Craft CMS to version 5.9.23 or later, which contains the fix for this vulnerability.
Original NVD description (English source)
Craft CMS is a content management system (CMS). In versions 5.0.0-RC1 through 5.9.22, an author-level control panel user can store a malicious 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. To exploit, an attacker must have an existing control panel account (Author role minimum), the victim must perform a drag operation (not just visit the page), and the victim’s session needs to be elevated at trigger time. This issue has been fixed in version 5.9.23.