Multiple SQL injection vulnerabilities in 1WebCalendar 4.0 and earlier allow remote attackers to execute arbitrary SQL commands via the (1) EventID parameter in viewEvent.cfm, (2) NewsID parameter in newsView.cfm, or (3) ThisDate parameter in mainCal.cfm.
https://exchange.xforce.ibmcloud.com/vulnerabilities/25373
http://www.vupen.com/english/advisories/2006/1040
http://www.securityfocus.com/bid/17193
http://pridels0.blogspot.com/2006/03/1webcalendar-v-4x-vuln.html