The screensharing feature in the Admin application in Apple Xsan before 2.2 places a cleartext username and password in a URL within an error dialog, which allows physically proximate attackers to obtain credentials by reading this dialog.

Buffer overflow in the Xsan Filesystem driver on Mac OS X 10.4.7 and OS X Server 10.4.7 allows local users with Xsan write access, to execute arbitrary code via unspecified vectors related to "processing a path name."