Wpsymposium : Security Vulnerabilities, CVEs,

SQL injection vulnerability in the WP Symposium plugin before 15.8 for WordPress allows remote attackers to execute arbitrary SQL commands via the size parameter to get_album_item.php.

SQL injection vulnerability in forum.php in the WP Symposium plugin before 15.4 for WordPress allows remote attackers to execute arbitrary SQL commands via the show parameter in the QUERY_STRING to the default URI.

Multiple unrestricted file upload vulnerabilities in the WP Symposium plugin before 11.12.24 for WordPress allow remote attackers to execute arbitrary code by uploading a file with an executable extension using (1) uploadify/upload_admin_avatar.php or (2) uploadify/upload_profile_avatar.php, then accessing it via a direct request to the file in an unspecified directory inside the webroot.