Multiple SQL injection vulnerabilities in phpCommunity 2 2.1.8, when magic_quotes_gpc is disabled, allow remote attackers to execute arbitrary SQL commands via (1) the forum_id parameter in a forum action to index.php, (2) the topic_id parameter in a forum action to index.php, (3) the wert parameter in an id search action to index.php, (4) the wert parameter in a nick search action to index.php, or (5) the wert parameter in a forum search action to index.php, related to class_forum.php and class_search.php.