CVE-2013-3536: Whmcs Group Pay

High severity, CVSS 7.5. EPSS: 2.2% chance of exploitation in the next 30 days.

SQL injection vulnerability in the gp_LoadUserFromHash function in functions_hash.php in the Group Pay module 1.5 and earlier for WHMCS allows remote attackers to execute arbitrary SQL commands via the hash parameter.

Affected products

• Whmcs Group Pay: up to and including 1.5

Published 2013-05-13. Last modified 2026-06-16.