mvnForum contains a flaw that allows a remote cross site scripting attack. This flaw exists because the application does not properly validate user-supplied input upon submission to the searchprocess script. This could allow a user to create a specially crafted URL that would execute arbitrary code in another user's browser within the trust relationship between the browser and the server, leading to a loss of integrity. An attacker could potentially steal a user's cookie-based authentication data, allowing impersonation or privilege escalation.
Upgrade to version 1.0 RC4_03 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.