A vulnerability has been reported in Tree BBS, which can be exploited by malicious people to conduct cross-site scripting attacks.

Certain unspecified input is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.

Solution
Update to the latest version.

Provided and/or discovered by
JVN credits Yoshinori Ohta of Business Architects Inc.

Changelog
Further details available to Secunia VIM customers

Original Advisory
JVN:
http://jvn.jp/jp/JVN93827000/index.html

Tree BBS:
http://php.s3.to/bbs/bbs6.php

Deep Links
Links available to Secunia VIM customers