Cross-Site Request Forgery (CSRF) vulnerability in Greg Winiarski WPAdverts – Classifieds Plugin allows Cross Site Request Forgery.This issue affects WPAdverts – Classifieds Plugin: from n/a through 2.1.2.

The WPAdverts – Classifieds Plugin plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg & remove_query_arg without appropriate escaping on the URL in all versions up to, and including, 2.1.7. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

The WPAdverts – Classifieds Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's adverts_add shortcode in all versions up to, and including, 2.1.6 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.