** Are you aware of the "known exploits" in question **
Yes, Matt (CalendarScript's author) has corrected the exploits in the current version. See http://www.calendarscript.com/download/history.txt
** can you recommend any fix/patches? **
Sure, upgrade the installation (available from the download page - you'll likely have to install the 3.2 upgrade first then the 3.21 upgrade) or replace the existing files with the current 3.21 version*.
*Overwriting a current installation with with the most recent release will result in the loss of most data (for the default calendar anyway) and any modifications and settings which have been made to it.
JMO
Dan O.
Unofficial CalendarScript - Mods and Plugins site
[This message has been edited by DanO (edited November 28, 2004).]