Multiple SQL injection vulnerabilities in WebCalendar 1.0.1 allow remote attackers to execute arbitrary SQL commands via the (1) startid parameter to activity_log.php, (2) startid parameter to admin_handler.php, (3) template parameter to edit_template.php, and (4) multiple parameters to export_handler.php.
https://exchange.xforce.ibmcloud.com/vulnerabilities/23369
http://www.vupen.com/english/advisories/2005/2643
http://www.ush.it/2005/11/28/webcalendar-multiple-vulnerabilities
http://www.securityfocus.com/bid/15662
http://www.securityfocus.com/bid/15608
http://www.securityfocus.com/bid/15606
http://www.securityfocus.com/archive/1/418286/100/0/threaded
http://www.securityfocus.com/archive/1/417900/100/0/threaded
http://www.debian.org/security/2006/dsa-1002
http://sourceforge.net/forum/forum.php?thread_id=1392833&forum_id=11587
http://securityreason.com/securityalert/215