We recently migrated WHMCS to latest CentOS 7 server with cPanel. The WHMCS ClientArea showed White screen when “Client logins were used”. We found that the server had MySQL strict mode enabled which was causing this problem. I disabled MySQL strict mode as below : Edited /usr/my.cnf and changed below value : sql_mode=NO_ENGINE_SUBSTITUTION,NO_AUTO_CREATE_USER Restarted MySQL… Continue reading Disable MySQL strict mode!
A potential security issue has been discovered whereby it may be possible for a malicious user to inject a specially crafted combination of variables leading to unexpected results. The issue revolves around the Smarty templating system and template related processing. > Patch Download Link: http://www.whmcs.com/go/21/download Patch will work for all versions of WHMCS 4.x. Buy… Continue reading WHMCS Security Advisory