The DocCheck Login plugin for WordPress is vulnerable to unauthorized post access in all versions up to, and including, 1.1.5. This is due to plugin redirecting a user to login on a password protected post after the page has loaded. This makes it possible for unauthenticated attackers to read posts they should not have access to.
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: