The Contact Form Entries WordPress plugin before 1.2.4 does not sanitise and escape various parameters, such as form_id, status, end_date, order, orderby and search before outputting them back in the admin page
The Contact Form Entries WordPress plugin before 1.1.7 does not validate, sanitise and escape the IP address retrieved via headers such as CLIENT-IP and X-FORWARDED-FOR, allowing unauthenticated attackers to perform Cross-Site Scripting attacks against logged in admins viewing the created entry