Cross-site scripting (XSS) vulnerability in index.php in phpGroupWare 0.9.14.005 and earlier allows remote attackers to inject arbitrary web script or HTML via the date parameter in a calendar.uicalendar.planner menuaction.
https://savannah.gnu.org/bugs/?func=detailitem&item_id=7478
https://euvd.enisa.europa.eu/vulnerability/EUVD-2004-2565