Here're the Most Dangerous Vulnerabilities that exist in WordPress Ecosystem

Backdoor

Top 10 Most Dangerous Vulnerabilities

Backdoors are frequently encrypted to seem as normal WordPress system files, and they get access to WordPress databases by exploiting flaws and defects in older versions of the platform. The TimThumb incident was a classic example of a backdoor vulnerability utilising shady scripts and out-of-date software, compromising millions of websites.

Pharma Hacks

Top 10 Most Dangerous Vulnerabilities

The Pharma Hack vulnerability inserts malicious code into outdated versions of WordPress websites and plugins, leading search engines to offer advertisements for pharmaceutical products when a compromised website is searched for. The vulnerability is more of a spam threat than traditional malware, but it gives search engines enough grounds to blacklist the site based on spam distribution claims.

Brute-force Login Attempts

Top 10 Most Dangerous Vulnerabilities

Brute-force login attempts make use of automated programmes to crack weak passwords and obtain access to your site. 

Malicious Redirects

Top 10 Most Dangerous Vulnerabilities

Malicious redirects use FTP, SFTP, wp-admin, and other protocols to install backdoors in WordPress installations and insert redirection codes into the website.

Cross-Site Scripting (XSS)

Top 10 Most Dangerous Vulnerabilities

When a malicious script is injected into a trustworthy website or application, this is known as cross-site scripting (XSS). 

Denial of Service

Top 10 Most Dangerous Vulnerabilities

The most dangerous of all, the Denial of Service (DoS) vulnerability, uses faults and bugs in code to overload the memory of website operating systems. Hackers have hacked millions of websites and made millions of dollars by launching DoS attacks against obsolete and defective versions of WordPress software.

Solution

Top 10 Most Dangerous Vulnerabilities

Nothing is 100% secure. Your best bet is keeping always a backup of your data and everything up to date in the timely manner.