WordPress NOSpamPTI Plugin 'comment_post_ID' Parameter SQL Injection Vulnerability

Summary
This host is installed with WordPress NOSpamPTI plugin and is prone to sql injection vulnerability.
Impact
Successful exploitation will allow attacker to inject or manipulate SQL queries in the back-end database, allowing for the manipulation or disclosure of arbitrary data. Impact Level: Application
Solution
No solution or patch was made available for at least one year since disclosure of this vulnerability. Likely none will be provided anymore. General solution options are to upgrade to a newer release, disable respective features, remove the product or replace the product by another one.
Insight
Input passed via the 'comment_post_ID' parameter to wp-comments-post.php script is not properly sanitised before being used in the code.
Affected
WordPress NOSpamPTI Plugin version 2.1 and prior.
Detection
Send a crafted HTTP POST request and check whether it is able to execute sql command or not.
References