The Seriously Simple Podcasting WordPress plugin before 2.19.1 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.

The Seriously Simple Podcasting WordPress plugin before 3.0.0 discloses the Podcast owner's email address (which by default is the admin email address) via an unauthenticated crafted request.

The Seriously Simple Podcasting WordPress plugin before 3.3.0 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfilteredhtml capability is disallowed (for example in multisite setup)