May 28

Version 3.1.3 « WordPress Codex

On May 25, 2011, WordPress 3.1.3 was released to the public. This is a security update for all previous WordPress versions.

For version 3.1.3, the database version (db_version in wp_options) remained at 17516.

Installation/Update Information

To download WordPress 3.1.3, update automatically from the Dashboard > Updates menu in your site’s admin area or visit

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

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


  • Various security hardening by Alexander Concha.
  • Taxonomy query hardening by John Lamansky.
  • Prevent sniffing out user names of non-authors by using canonical redirects. Props Verónica Valeros.
  • Media security fixes by Richard Lundeen of Microsoft, Jesse Ou of Microsoft, and Microsoft Vulnerability Research.
  • Improves file upload security on hosts with dangerous security settings.
  • Cleans up old WordPress import files if the import does not finish.
  • Introduce “clickjacking” protection in modern browsers on admin and login pages.


Version 3.1.3 « WordPress Codex.

1 comment

  1. I upgraded today, straight forward and fast. Now running on 3.1.3

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