https://secupress.me/blog/wordpress-4-8-2-security-release/
On Sep. 19th 2017 WordPress Core and Security Team has released a minor version containing 9 security fixes and 6 maintenance fixes.
This is very important to understand that this is a big security release since every version of WordPress since 2.3 has been updated, your website should be updated automatically, if not under 12h, do it manually!
9 security
Source: Security Feed