WHMCS customer name change, maybe xploit?

Hello guys, today i receive an email from my WHMCS

Client ID: XX - Mark Johnson has requested to change his/her details as indicated below:

First Name: 'Mark' to 'AES_ENCRYPT(1,1), firstname=(SELECT GROUP_CONCAT(id,0x3a,username,0x3a,email,.........more....) FROM tbladmins)' Email Address: 'govftoi@mailnesia.com' to 'govtfoi@mailnesia.com' Default Payment Method: '' to '' If you are unhappy with any of the changes, you need to login and revert them - this is the only record of the old details.

http://mysite

anyone have received something like this, nothing happen i guess.