The following security issues were fixed in this version.
" 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
It is recommended that users of Wordpress v3.1.x and v3.2.x update to
the latest version.