phpGroupWare contains a flaw that may allow a remote attacker to execute arbitrary commands. The issue is triggered by specifying a malicious include file in the "phpgw_info" parameter of the "phpgw.inc.php" script. It is possible that the flaw may allow arbitrary commands execution resulting in a loss of integrity.
Upgrade to version 0.9.7 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.