Hi @alexd123,
The recent security incident only affected the main WooCommerce plugin and an add-on plugin called WooCommerce Blocks. Both of those plugins were patched to resolve the reported security issue. Plugins like Stripe etc were never affected.
They tested up to version number within the Stripe plugin is currently 5.4 and it seems the developers forgot to update that to 5.6 in their latest release. You can see that version number below.
https://github.com/woocommerce/woocommerce-gateway-stripe/blob/d008ffd98e8e49801a07cc56e55bc96a6a35ac4d/woocommerce-gateway-stripe.php#L12
The Stripe plugin has been fully tested with the latest version of WooCommerce and it’s simply a case of the WC tested up to version number not having been updated within the latest version of the plugin.
Our developers will get that number updated for the next release of the plugin to save any future confusion.