CatFolders < 2.5.7 - Subscriber+ Folder Ownership Reset and User Restriction Disable via catf_run_merge

The CatFolders WordPress plugin before 2.5.7 does not have authorisation checks on a folder maintenance action, allowing users with a role as low as subscriber to reset the per-user ownership of every media folder and disable the CatFolders WordPress plugin before 2.5.7's user restriction setting.