CVE-2008-6736 (flat_calendar)
Flat Calendar 1.1 does not properly restrict access to administrative functions, which allows remote attackers to (1) add new events via calAdd.php, as reachable from admin/add.php, or (2) delete events via admin/deleteEvent.php. NOTE: this is only a vulnerability when the administrator does not follow recommendations in the product’s security documentation.
URL: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2008-6736