Yesterday someone reported a security issue in bugtraq:
http://www.securityfocus.com/bid/23992/info
Although the issue was reported directly to SecurityFocus and not to us, I want to stress that this is a bug in an old version of Achievo. Version 1.2 that was released over a year ago already had a fix for this issue. (The report originally didn't mention this but I had them include the info on 1.2 when I discovered the report.)
Those of you still running Achievo 1.1 are advised to upgrade to the latest stable version of Achievo, 1.2.1.
If that is not an option, the issue can be fixed in two ways:
* Make sure that register_globals is turned off in php.ini. The problem is not present when this setting is turned off.
* Edit index.php, and add the line $config_atkroot = "./"; right in front of the include of atk.inc
When in doubt, or if you have questions according to this issue, please consult the Achievo forum or contact me directly.