Wordpress Level Four Storefront Plugin SQL Injection Vulnerability

Summary
This host is installed with Wordpress Level Four Storefront Plugin and is prone to sql injection vulnerability.
Impact
Successful exploitation will allow remote attackers 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
The flaw is due to improper validation of user-supplied input to the getsortmanufacturers.php script via id parameter.
Affected
Wordpress Level Four Storefront Plugin
References