CVE 2009-4416
Cross-site scripting (XSS) vulnerability in login.php in phpGroupWare 0.9.16.12, and possibly other versions before 0.9.16.014, allows remote attackers to inject arbitrary web script or HTML via an arbitrary parameter whose name begins with the "phpgw_" sequence.
See the 
CVE page on Mitre.org
for more details.
