The admin tables for PaymentMethods, Currencies and Carriers exposed inline toggles and per-record actions (enable, disable, edit, delete) that were rendered for any authenticated panel user without checking the corresponding per-action permission. A low-privilege user could:
Disable every payment method on the store, blocking checkout.
Disable or alter the default currency, changing displayed prices and the exchange rate basis.
Disable carriers, breaking shipping rate computation at checkout.
The impact is a full denial of checkout and pricing integrity loss, reachable by any authenticated user.
Patches
Fixed in v2.8.0. Each toggle and per-record action now requires its matching permission (edit_payment_methods, edit_currencies, edit_carriers).