Published:2011/07/27  Last Updated:2011/07/27

Plone vulnerable to cross-site scripting


Plone contains a cross-site scripting vulnerability.

Products Affected

  • Plone 2.5.2 and earlier


Plone is an open source content management system (CMS).  Plone contains a cross-site scripting vulnerability.


An arbitrary script may be executed on the web browser of an user who is logged on.


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

This issue has been resolved in Plone 2.5.3.


JPCERT/CC Addendum

This JVN publication was delayed to 2011/07/27 after developer fixes were developed. From the fiscal year 2011, JPCERT/CC is using a new vendor coordination procedure. This new procedure came from the recommendation of the fiscal year 2010 "Study Group on Information System Vulnerability Handling" aimed at more timely JVN publications.

Vulnerability Analysis by JPCERT/CC

Analyzed on

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


Daiki Fukumori of Cyber Defense Institute, 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-2011-1340
JVN iPedia JVNDB-2011-000056