The Podlove Podcast Publisher WordPress plugin before 4.2.1 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 unfiltered_html capability is disallowed (for example in multisite setup).
The Podlove Podcast Publisher plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 4.2.2. This is due to missing or incorrect nonce validation on the ajax_transcript_delete() function. This makes it possible for unauthenticated attackers to delete arbitrary episode transcripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
The Podlove Podcast Publisher plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Feed Name value in version <= 4.1.25 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.