Craft CMS's mass assignment via id in newAttributes during bulk duplicate overwrites existing elements

Summary There is a mass-assignment flaw in the bulk-duplicate element action. Alice, holding only the permission to duplicate an entry she owns, submits an arbitrary id through the newAttributes request parameter. The duplication routine overrides its own id = null reset with that value and write...

CVE-2026-50281

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...

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...

CVE-2026-50281

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...

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...

EUVD-2026-41409

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...

PT-2026-55425

Summary There is a mass-assignment flaw in the bulk-duplicate element action. Alice, holding only the permission to duplicate an entry she owns, submits an arbitrary id through the newAttributes request parameter. The duplication routine overrides its own id = null reset with that value and write...

PT-2026-55265

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...

Palantir Security Breach

Palantir is a data platform from US-based Palantir that reimagines how people use data by removing the barriers between back-end data management and front-end data analysis. A security vulnerability exists in Palantir Gotham that stems from the presence of a front-end UI error that causes newly...