The Arena.IM – Live Blogging for real-time events plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'arenablog' shortcode in all versions up to, and including, 0.3.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The Arena.IM – Live Blogging for real-time events plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'arena_embed_amp' shortcode in all versions up to, and including, 0.4.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The Arena.IM – Live Blogging for real-time events plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 0.4.1. This is due to missing or incorrect nonce validation on the 'albfre_user_action' AJAX action. This makes it possible for unauthenticated attackers to update the plugin's settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.