Devs Accounting <= 1.2.0 - Missing Authorization to Unauthenticated Account Deletion via /delete-account/ REST Endpoint

The Devs Accounting – Simple Accounting and Invoicing Solution plugin for WordPress is vulnerable to unauthorized modification/deletion of data due to a missing capability check on the delete_single_account() function in versions up to, and including, 1.2.0. The REST route 'devs-accounting/v1/delete-account/(?P<id>\d+)' is registered without any permission_callback, which causes WordPress to expose the endpoint to public, unauthenticated access. This makes it possible for unauthenticated attackers to soft-delete arbitrary accounting account records (wp_dac_accounts) by issuing a simple GET request to the endpoint with any account ID.