CVE-2026-81912

Concrete CMS before 9.5.3 contains a Cross-Site Request Forgery (CSRF) flaw in the Move Multiple Groups feature. The dashboard/users/groups/bulkupdate/confirm() endpoint moved selected group tree nodes without validating an action token, allowing a state-changing group move to be processed agains...

CVE-2026-81912 Concrete CMS before 9.5.3 is vulnerable to Cross-Site Request Forgery in the Move Multiple Groups feature

Concrete CMS before 9.5.3 is vulnerable to Cross-Site Request Forgery in the Move Multiple Groups feature. The dashboard/users/groups/bulkupdate/confirm endpoint moved the selected group tree nodes without validating an action token, so a state-changing group move could be processed for an...