For all you do-it-yourself-ers, this is why it’s important to stay current on your core, theme, and plugin updates. If you can’t find the time, hire me, or another professional, to do it consistently. Most updates should not be considered “optional.” They are done to stay ahead of hackers or fix exploit flaws.
WordPress, the most popular CMS in the world, is vulnerable to a logical vulnerability that could allow a remote attacker to reset targeted users’ password under certain circumstances.
The vulnerability (CVE-2017-8295) becomes even more dangerous after knowing that it affects all versions of WordPress — including the latest 4.7.4 version.
The WordPress flaw was discovered by Polish security researcher Dawid Golunski of Legal Hackers last year in July and reported it to the WordPress security team, who decided to ignore this issue, leaving millions of websites vulnerable.
Source: Unpatched WordPress Flaw Could Allow Hackers To Reset Admin Password