CVE-2008-7143
phpBB 2.0.23 includes the session ID in a request to modcp.php when the moderator or administrator closes a thread, which allows remote attackers to hijack the session via a post in the thread containing a URL to a remotely hosted image, which might include the session ID in the Referer header.
Date published : 2009-09-01
http://www.securityfocus.com/archive/1/489815/100/0/threaded