The Cost Calculator Builder plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'embed-create-page' and 'embed-insert-pages' functions in all versions up to, and including, 3.2.12. This makes it possible for authenticated attackers, with Subscriber-level access and above, to create arbitrary posts and append arbitrary content to existing posts.
https://plugins.trac.wordpress.org/changeset/3108606/
https://plugins.trac.wordpress.org/browser/cost-calculator-builder/trunk/frontend/dist/admin.js