6.1.X
Servers using the FileSystemStore (default) or the AdvancedFileSystemStore to persist documents in the document library (dl.store.impl in portal.properties) are vulnerable to a directory traversal attacks. By manipulating the URL in the Message Boards, Wiki, or Knowledge Base portlet, an attacker can access any file on the server.

6.0.X
Servers using the FileSystemHook (default) or the AdvancedFileSystemHook to persist documents in the document library (dl.hook.impl in portal.properties) are vulnerable to a directory traversal attacks. By manipulating the URL in the Message Boards, Wiki, or Knowledge Base portlet, an attacker can access any file on the server.