Version 4.0.9

On 6 January, 2016, WordPress 4.0.9 was released to the public.See also: other WordPress Versions.

Installation/Update Information

To download WordPress 4.0.9, update automatically from the Dashboard > Updates menu in your site’s admin area or visit https://wordpress.org/download/release-archive/.

For step-by-step instructions on installing and updating WordPress:

If you are new to WordPress, we recommend that you begin with the following:

Summary

WordPress versions 4.4 and earlier are affected by a cross-site scripting vulnerability that could allow a site to be compromised. This was reported by Crtc4L.

List of Files Revised

/wp-content/plugins
/readme.html
/wp-admin/about.php
/wp-includes/version.php
/wp-includes/update.php
/wp-includes/class-wp-theme.php

First published

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