CVE-2011-4810: Whmcs Whmcompletesolution

Medium severity, CVSS 5.0. EPSS: 6.3% chance of exploitation in the next 30 days.

Multiple directory traversal vulnerabilities in WHMCompleteSolution (WHMCS) 3.x and 4.x allow remote attackers to read arbitrary files via the templatefile parameter to (1) submitticket.php and (2) downloads.php, and (3) the report parameter to admin/reports.php.

Affected products

• Whmcs Whmcompletesolution: version 3.0.0 only; version 4.0.0 only; version 4.0.1 only; version 4.0.2 only; version 4.1.0 only; version 4.1.1 only; …

Published 2011-12-14. Last modified 2026-06-16.