Published:2012/07/06  Last Updated:2012/07/06

Movable Type plugin MT4i vulnerable to cross-site scripting


MT4i contains a cross-site scripting vulnerability.

Products Affected

  • MT4i 3.1 beta 4 and earlier


MT4i is a Movable Type plugin. MT4i contains a cross-site scripting vulnerability.

Note that this vulnerability is different from JVN#79111101.


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
MT4i MT4i/3.1 (Japanese only)


JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2012.07.06

Measures Conditions Severity
Access Required can be attacked over the Internet using packets
  • High
Authentication anonymous or no authentication (IP addresses do not count)
  • High
User Interaction Required 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
  • Mid
Exploit Complexity the user must be convinced to take a difficult or suspicious action. If the honest user must have elevated privileges, they are likely to be more suspiciouse
  • High

Description of each analysis measures


Yuji Tounai of 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-2012-2642
JVN iPedia JVNDB-2012-000067