The Featured Image Plus – Quick & Bulk Edit with Unsplash plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the fip_save_attach_featured function in all versions up to, and including, 1.6.3. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update featured image of any post.
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
Access control involves the use of several protection mechanisms such as:
When any mechanism is not applied or otherwise fails, attackers can compromise the security of the product by gaining privileges, reading sensitive information, executing commands, evading detection, etc. There are two distinct behaviors that can introduce access control weaknesses: