The Button Generator WordPress plugin before 2.3.3 within the wow-company admin menu page allows to include() arbitrary file with PHP extension (as well as with data:// or http:// protocols), thus leading to CSRF RCE.
https://wpscan.com/vulnerability/a01844a0-0c43-4d96-b738-57fe5bfbd67a
https://plugins.trac.wordpress.org/changeset/2641639/button-generation