I just saw notice in my Wordpress dashboard that their latest update is now available. It resolves a number of security issues in the software. As usual, it is best to install updates soon after they are released to prevent any hacking attacks that might arise from these known bugs. Click on the "Please Update Now" banner in your Wordpress Dashboard to install the update automatically.
From the Wordpress 3.5.2 release notes:
The security fixes included:
Blocking server-side request forgery attacks, which could potentially enable an attacker to gain access to a site.
Disallow contributors from improperly publishing posts, reported by Konstantin Kovshenin, or reassigning the post’s authorship, reported by Luke Bryan.
An update to the SWFUpload external library to fix cross-site scripting vulnerabilities. Reported by mala and Szymon Gruszecki.
Prevention of a denial of service attack, affecting sites using password-protected posts.
An update to an external TinyMCE library to fix a cross-site scripting vulnerability. Reported by Wan Ikram.
Multiple fixes for cross-site scripting. Reported by Andrea Santese and Rodrigo.
Avoid disclosing a full file path when a upload fails. Reported by Jakub Galczyk.