Blind SQL Injection in WP Symposium allows unauthenticated attackers to access sensitive data

Perform the following POST to a site with the plugin installed. The request will take over 5 seconds to respond. You can read more about CVSS base scores on Wikipedia or in the CVSS specification. The plugin is available in the US and Canada for $99.99 ($1.99/1.1/1/2/1) and Canada. The plugins are available in Canada and Australia. The CVSS plugin is a free download from the US version of this article.”]

Source: https://advisories.dxw.com/advisories/blind-sql-injection-in-wp-symposium-allows-unauthenticated-attackers-to-access-sensitive-data/