Update to WordPress 4.7.2 Now!
Security company Sucuri found a severe problem with WordPress core files this week – if you’re using WordPress 4.7.0 or 4.7.1, it’s important that you update to 4.7.2 right away, where the problem has been fixed.
Basically, the vulnerability can allow a user to modify the content of any post or page within a WordPress site by content injection. It’s a serious security risk.
Take a moment to upgrade right now if you haven’t already.