A wordpress update has been released for Debian 6 LTS

Package : wordpress
Version : 3.6.1+dfsg-1~deb6u8
CVE ID : CVE-2015-5714 CVE-2015-5715
Debian Bug : #799140

Various security issue have been fixed in the Debian LTS (squeeze)
version of the Wordpress content management system.

CVE-2015-5714

A cross-site scripting vulnerability when processing shortcode tags
has been discovered.

The issue has been fixed by not allowing unclosed HTML elements in
attributes.

CVE-2015-5715

A vulnerability has been discovered, allowing users without proper
permissions to publish private posts and make them sticky.

The issue has been fixed in the XMLRPC code of Wordpress by not
allowing private posts to be sticky.

Other issue(s)

A cross-site scripting vulnerability in user list tables has been
discovered.

The issue has been fixed by URL-escaping email addresses in those user
lists.

  Wordpress security update for Debian 6 LTS