On June 21, 2013 WordPress 3.5.2 was released to the public with maintenance and security updates.

Security fixes:

Server-Side Request Forgery (SSRF) via the HTTP API. CVE-2013-2199.
Privilege Escalation: Contributors can publish posts, and users can reassign authorship. CVE-2013-2200.
Cross-Site Scripting (XSS) in SWFUpload. CVE-2013-2205.
Denial of Service (DoS) via Post Password Cookies. CVE-2013-2173.
Content Spoofing via Flash Applet in TinyMCE Media Plugin. CVE-2013-2204.
Cross-Site Scripting (XSS) when Uploading Media. CVE-2013-2201.
Full Path Disclosure (FPD) during File Upload. CVE-2013-2203.
And additional security hardening includes:

Cross-Site Scripting (XSS) (Low Severity) when Editing Media. CVE-2013-2201.
Cross-Site Scripting (XSS) (Low Severity) when Installing/Updating Plugins/Themes. CVE-2013-2201.
XML External Entity Injection (XXE) via oEmbed. CVE-2013-2202.
For more info take a look here: http://codex.wordpress.org/Version_3.5.2