Movable Type cross-site scripting vulnerability


Movable Type contains a cross-site scripting vulnerability.

Movable Type, a web log system from Six Apart KK, contains a vulnerability resulting from the improper handling of the management page that can lead to cross-site scripting.

This vulnerability is different from JVN#30385652.

An updated version addressing this vulnerability was released on December 3, 2008

Ryuji Sakai, Tomohito Yoshino and Yoshinori Ohta of Business Architects Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the vendor under the Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V2 Severity:
Base Metrics 4.0 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: Single Instance
  • Confidentiality Impact: None
  • Integrity Impact: Partial
  • Availability Impact: None
Affected Products

Six Apart, Ltd.
  • Movable Type 4 (version 4.22 and earlier)
  • Movable Type (community_solution) 4 (version 4.22 and earlier)
  • Movable Type (enterprise) 4 (version 4.22 and earlier)
  • Movable Type 4 (Open Source) (version 4.22 and earlier)
  • Movable Type (enterprise) 1.5 (version 1.55 and earlier)
  • Movable Type 3 (version 3.37 and earlier)


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

[Update the Software]
Update to the latest version according to the information provided by the vendor.
Vendor Information

Six Apart, Ltd.
CWE (What is CWE?)

  1. Cross-site Scripting(CWE-79) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2008-4634

  1. JVN : JVN#81490697
  2. National Vulnerability Database (NVD) : CVE-2008-4634
  3. Secunia Advisory : SA32305
  4. SecurityFocus : 31826
  5. ISS X-Force Database : 45968
  6. JVN iPedia (Japanese) : JVNDB-2008-000072
Revision History

  • [2008/10/21]
      Web page published
      Affected Products : Updated Six Apart  (Movable Type 4.22).
      Vendor Information : Six Apart (Movable Type 4.23).