WordPressがバージョン4.0.1に自動アップデートされました。

WordPressはマイナーアップデートの場合は自動でアップデートされます。
今回は23個のバグが修正されたとのこと。

Version 4.0.1 « WordPress Codex

Summary

From the announcement post:

・Three cross-site scripting issues that a contributor or author could use to compromise a site.
・A cross-site request forgery that could be used to trick a user into changing their password.
・An issue that could lead to a denial of service when passwords are checked.
・Additional protections for server-side request forgery attacks when WordPress makes HTTP requests.
・An extremely unlikely hash collision could allow a user’s account to be compromised, that also required that they haven’t logged in since 2008 (I wish I were kidding).
・WordPress now invalidates the links in a password reset email if the user remembers their password, logs in, and changes their email address.

　
　
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