CVE-2026-50281 Craft CMS: Mass assignment via id in newAttributes during bulk duplicate overwrites existing elements

Craft CMS is a content management system CMS. Versions 5.7.0 and above, prior to 5.9.21 contain a mass-assignment flaw in the bulk-duplicate element action. An attacker who is only able to duplicate their own entires can submit an arbitrary id through the newAttributes request parameter. The...