WooCommerce has patched a critical vulnerability identified on July 13, 2021. The vulnerability impacts version 3.3 to 5.5 of the WooCommerce plugin, as well as version 2.5 to 5.5 of the WooCommerce Blocks feature plugin.
Since WooCommerce backported this security fix to every release branch back to 3.3, store owners using older versions of WooCommerce can safely update to the highest number in their current release branch even if not running the very latest 5.5.1 version.
FinestShops has already patched all the affected stores hosted with us.
We also encourage all our clients to schedule an update to the latest version of WooCommerce and all the plugins to keep your store fast and secured. To do this, simply open a ticket at https://support.finestshops.com/ or email firstname.lastname@example.org with the date/time for the update to take place.