Published:2012/12/21  Last Updated:2013/02/15

concrete5 vulnerable to cross-site scripting


concrete5 contains a cross-site scripting vulnerability.

Products Affected

  • concrete5 Japanese versions 5.5.1 through
  • concrete5 English versions 5.5.0 through


concrete5 is an open source content management system (CMS). concrete5 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.

On December 8, 2012, concrete5 Japanese version was released, which addressed this vulnerability.
On February 14, 2013, concrete5 English version 5.6.1 was released, which addressed this vulnerability.

Vendor Status

Vendor Status Last Update Vendor Notes
concrete5 japan Inc. Vulnerable 2012/12/21 concrete5 japan Inc. website


JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2012.12.21

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 little to no expertise and/or luck required to exploit (cross-side scripting).Expected to be the common response
  • 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-2012-5181
JVN iPedia JVNDB-2012-000113

Update History

Information under the section "Solution" was updated.