Vulnerability Description
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.
Related Weaknesses (CWE)
References
- https://github.com/craftcms/cms/commit/162321e899cc97517fb6f5a02b5528f549d0c6cc
- https://github.com/craftcms/cms/security/advisories/GHSA-xrqc-p465-2xvg
- https://github.com/craftcms/cms/security/advisories/GHSA-xrqc-p465-2xvg
FAQ
What is CVE-2026-55793?
CVE-2026-55793 is a documented vulnerability. 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 a...
How severe is CVE-2026-55793?
CVSS scoring is not yet available for CVE-2026-55793. Check NVD for updates.
Is there a patch for CVE-2026-55793?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.