WordPress 3.5.1 is now available. Version 3.5.1 is the first maintenance release of 3.5, fixing 37 bugs. It is also a security release for all previous WordPress versions. Which include:

• Editor: Prevent certain HTML elements from being unexpectedly removed or modified in rare cases.
• Media: Fix a collection of minor workflow and compatibility issues in the new media manager.
• Networks: Suggest proper rewrite rules when creating a new network.
• Prevent scheduled posts from being stripped of certain HTML, such as video embeds, when they are published.
• Work around some misconfigurations that may have caused some JavaScript in the WordPress admin area to fail.
• Suppress some warnings that could occur when a plugin misused the database or user APIs.

WordPress 3.5.1 also addresses the following security issues:

• A server-side request forgery vulnerability and remote port scanning using pingbacks. This vulnerability, which could potentially be used to expose information and compromise a site, affects all previous WordPress versions. This was fixed by the WordPress security team. We’d like to thank security researchers Gennady Kovshenin and Ryan Dewhurst for reviewing our work.
• Two instances of cross-site scripting via shortcodes and post content. These issues were discovered by Jon Cave of the WordPress security team.
• A cross-site scripting vulnerability in the external library Plupload. Thanks to the Moxiecode team for working with us on this, and for releasing Plupload 1.5.5 to address this issue.