Published:2011/01/07  Last Updated:2011/01/07

SquirrelMail vulnerable to cross-site scripting


SquirrelMail contains a cross-site scripting vulnerability.

Products Affected

  • SquirrelMail 1.4.0 to 1.4.9a


SquirrelMail from SquirrelMail Project is an open source webmail (web-based email).
SquirrelMail contains an issue in handling specific character encoding and processing "data:" URL, which may result in cross-site scripting.


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


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

The issue was resolved in SquirrelMail 1.4.10.

Vendor Status


JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2011.01.07

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


Yosuke Hasegawa from Matcha139 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-2007-1262
JVN iPedia JVNDB-2007-000398