The WordPress 3.6.1 Security Update was released this week. I highly recommend updating your site as soon as possible.
3.6.1 patches 3 important security vulnerabilities listed below that exist in 3.6
- Block unsafe PHP unserialization that could occur in limited situations and setups, which can lead to remote code execution. Reported by Tom Van Goethem.
- Prevent a user with an Author role, using a specially crafted request, from being able to create a post “written by” another user. Reported by Anakorn Kyavatanakij.
- Fix insufficient input validation that could result in redirecting or leading a user to another website. Reported by Dave Cummo, a Northrup Grumman subcontractor for the U.S. Centers for Disease Control and Prevention.
Additionally, the WordPress Secutiry Team adjusted security restrictions around file uploads to mitigate the potential for cross-site scripting.