The PPWP – Password Protect Pages plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.8.9 via API. This makes it possible for unauthenticated attackers to obtain post titles, IDs, slugs as well as other information including for password-protected posts.

The PPWP WordPress plugin before 1.8.6 does not validate and escape some of its shortcode attributes before outputting them back in the page, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attacks which could be used against high privilege users such as admins.