Lotus Domino contains a flaw that allows a remote cross site scripting attack. This flaw exists because the application does not properly validate input upon submission to an unmentioned script. This could allow a user to create a specially crafted URL that would execute arbitrary code in a user's browser within the trust relationship between the browser and the server, leading to a loss of integrity.
Upgrade to version 6.0.4 and 6.5.2 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.