WordPress.org

Codex

Interested in functions, hooks, classes, or methods? Check out the new WordPress Code Reference!

Version 3.9.4

Languages: English • (Add your language)

On April 21, 2015, WordPress 3.9.4 was released to the public. This is a security update for all previous WordPress versions.

Installation/Update Information

To download WordPress 3.9.4, 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:

  • A serious critical cross-site scripting vulnerability, which could enable anonymous users to compromise a site.
  • Files with invalid or unsafe names could be upload.
  • Some plugins are vulnerable to an SQL injection attack.
  • A very limited cross-site scripting vulnerability could be used as part of a social engineering attack.
  • Four hardening changes, including better validation of post titles within the Dashboard.

List of Files Revised

license.txt
readme.html
wp-admin/includes/class-wp-comments-list-table.php
wp-admin/includes/dashboard.php
wp-admin/includes/post.php
wp-admin/includes/template.php
wp-admin/js/nav-menu.js
wp-includes/capabilities.php
wp-includes/class-wp-editor.php
wp-includes/formatting.php
wp-includes/js/plupload/plupload.flash.swf
wp-includes/version.php
wp-includes/wp-db.php
See also: other WordPress Versions.
Retrieved from "https://codex.wordpress.org/index.php?title=Version_3.9.4&oldid=151030"

Codex Resources