Two vulnerabilities have been reported in Joomla!, which can be exploited by malicious people to conduct cross-site scripting attacks and disclose sensitive information.

1) An error exists in restricting direct access to users' vCard via URL. This can be exploited to retrieve users' vCards and gain access to their email addresses even when vCard access has been disabled.

2) A vulnerable version of TinyMCE is used by Joomla!.

For more information:
SA18262

The vulnerabilities have been reported in version 1.0.5. Prior versions may also be affected.

Solution
Update to version 1.0.7.
Further details available to Secunia VIM customers

Provided and/or discovered by
1) L. Lister
2) Reported by vendor

Changelog
Further details available to Secunia VIM customers

Original Advisory
Joomla:
http://forge.joomla.org/sf/go/artf2950
http://forge.joomla.org/integration/viewcvs/viewcvs.cgi?root=joomla&rev=1713&system=exsy1002&view=rev
http://forge.joomla.org/integration/viewcvs/viewcvs.cgi?root=joomla&rev=1717&system=exsy1002&view=rev

ListerIT:
http://www.listerit.com/content/view/116/84/

Other references
Further details available to Secunia VIM customers

Deep Links
Links available to Secunia VIM customers