WordPress Speed Up Service | WordPress Website Maintenance Packages How Dangerous is it to have an old MySQL Version on eCommerce Site?, by inky55 My client has a secure website that has a WooCommerce plugin and the latest version of PHP. However, the MySQL version that his site is running with is 5.5.51. WP recommends a minimum MySQL version of 5.6, but his host cannot upgrade the site to 5.6. After discovering that old versions of MySQL may expose websites to security vulnerabilities, should I move my client’s site to a different host? How Dangerous is it to have an old MySQL Version on eCommerce Site?