CubeCart V4.3.0 has today (11:46 AM GMT) been released.  This latest version fixes numeruos bugs and adds a number of additional features:

reCaptcha Spambot Protection
FCKEditor Updated to version 2.6.3
Password Salt added for enhanced security
Gulftech Security Audit from 4.2.3 integrated
Misc. Code Security Enhancements
Australia Post added to default shipping modules due to high demand
Moneybookers added to default payment […]