Provide references for CVE-2021-3172.
Where can I find more information about CVE-2021-3172?
References are available at: https://github.com/PHPFusion/PHPFusion/issues/2351, https://github.com/PHPFusion/PHPFusion/commit/7b8df6925cc7cfd8585d4f34d9120ff3a2e5753e.