Last week the latest security release of WordPress, version 4.4.2, was released and users are all encouraged to update their sites as soon as possible, as there are two security issues that may impact those running WordPress 4.4.1 and other outdated versions. The first issue is a potential SSRF for certain local URIs and the second is an open redirection attack, so do ensure you update immediately.
As well as protecting against these issues, WordPress 4.4.2 also contains fixes for 17 bugs that were identified in 4.4.1. More information about all of the changes has been posted in the release notes.