Critical security update for all Joomla! versions

Were published in 08/01/2013 security updates for all Joomla versions. The fixed issue allowed uploading malicious files to your server, allowing full files access.

Joomla 3.1.5:

Joomla 2.5.14:

Joomla 1.5.26:
(Althoug Joomla 1.5 support have been discontinued, this update is also available to tha platform, many thanks to Phil Taylor from for this).

Is highly recommended to do this update, and for those sites that still runs under 1.5, do the upgrade to the new framework