The WP MAPS PRO WordPress plugin before 6.1.1 registers an unauthenticated AJAX action which, given a valid nonce that is publicly emitted on any frontend page enqueuing its map script, unconditionally creates an administrator account and returns a magic-login URL granting interactive admin access.
https://wpscan.com/vulnerability/9bad9fc1-5032-45dc-983f-ba2dd7092385/