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Version 3.9.9

On September 15, 2015, WordPress 3.9.9 was released to the public. This is a security update for all previous WordPress versions.

Installation/Update Information

To download WordPress 3.9.9, 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

From the announcement post, WordPress 3.9.9 fixes two cross-site scripting vulnerabilities (CVE-2015-5714, CVE-2015-5715) and a potential privilege escalation.

List of Files Revised

readme.html
wp-admin/about.php
wp-admin/includes/ajax-actions.php
wp-admin/includes/class-wp-ms-users-list-table.php
wp-admin/includes/class-wp-users-list-table.php
wp-includes/class-wp-xmlrpc-server.php
wp-includes/media.php
wp-includes/shortcodes.php
wp-includes/version.php
wp-includes/wp-db.php
See also: other WordPress Versions.