CVE-2026-41128 Craft CMS has a Missing Authorization Check on User Group Removal via save-permissions Action

Craft CMS is a content management system CMS. In versions 5.6.0 through 5.9.14, the actionSavePermissions endpoint allows a user with only viewUsers permission to remove arbitrary users from all user groups. While saveUserGroups enforces per-group authorization for additions, it performs no...