On July 23, 2015, WordPress 3.8.9 was released to the public. This is a security update for all previous WordPress versions.
To download WordPress 3.8.9, 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:
- New To WordPress - Where to Start
- First Steps With WordPress or Upgrading WordPress Extended
- WordPress Lessons
From the announcement post, WordPress 3.8.9 fixes a cross-site scripting vulnerability, which could allow users with the Contributor or Author role to compromise a site.
The release also fixes an issue where it was possible for a user with Subscriber permissions to create a draft through Quick Draft.
List of Files Revised
wp-admin/about.php wp-admin/includes/dashboard.php wp-admin/post.php wp-includes/formatting.php wp-includes/capabilities.php wp-includes/kses.php wp-includes/version.php wp-includes/class-wp-embed.php wp-includes/shortcodes.php readme.html