Published:2009/06/25  Last Updated:2009/07/01

Tree BBS from Let's PHP! vulnerable to cross-site scripting


Tree BBS from Let's PHP! contains a cross-site scripting vulnerability.

Products Affected

  • Tree BBS released on November 23, 2004 and earlier


Tree BBS from Let's PHP! is a tree-structured bulletin board software. Tree BBS contains a cross-site scripting vulnerability.


An arbitrary script may be executed on the user's web browser.


Update the Software
Update to the latest version according to the information provided by the developer.

Vendor Status

Vendor Link
Let's PHP! Tree BBS (Japanese Only)


JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2009.06.25

Measures Conditions Severity
Access Required Routed - can be attacked over the Internet using packets
  • High
Authentication None - anonymous or no authentication (IP addresses do not count)
  • High
User Interaction Required Simple - the user must be convinced to take a standard action that does not feel harmful to most users, such as click on a link or view a file
  • Medium
Exploit Complexity Low - little to no expertise and/or luck required to exploit (cross-site scripting)
  • High

Description of each analysis measures


Yoshinori Ohta of Business Architects Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

Other Information

JPCERT Reports
CERT Advisory
CPNI Advisory
CVE CVE-2009-2226
JVN iPedia JVNDB-2009-000044

Update History