Possible security issue with a mod, hack attempt?

[viper357]

Hi, thanks for the reply, this is one of the database errors, I got about 10, some with different URL's that they were obviously trying.

Database error in vBulletin 3.8.5:

Invalid SQL:
select user.username,  img.userid,count(*) imgcnt FROM vbimghost as img LEFT JOIN user as user ON  img.userid = user.userid where imgprivate =0 group by user.username LIMIT  -20,20;

MySQL Error   : You have an error in your SQL syntax; check the  manual that corresponds to your MySQL server version for the right syntax to use  near '-20,20' at line 1
Error Number  : 1064
Request Date  : Thursday,  April 19th 2012 @ 08:16:39 AM
Error Date    : Thursday, April 19th 2012 @  08:16:39 AM
Script        : http://www.marineaquariumsa.com/vbim.../../etc/passwd
Referrer       : 
IP Address    : removed
Username      :  Unregistered
Classname     : vB_Database
MySQL Version :