Multiple SQL injection vulnerabilities in phpCommunityCalendar 4.0.3 allow remote attackers to execute arbitrary SQL commands via the (1) CalendarDetailsID parameter in (a) month.php, (b) day.php, and (c) delCalendar.php; (2) ID parameter in (d) event.php; (3) AdminUserID parameter in (e) delAdmin.php; (4) EventLocationID parameter in (f) delAddress.php; and (5) LocationID parameter in (g) delCategory.php.