The WooCommerce - Social Login plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 2.7.3. This is due to insufficient controls in the 'woo_slg_login_email' function. This makes it possible for unauthenticated attackers to log in as any existing user on the site, excluding an administrator, if they know the email of user.
The product requires authentication, but the product has an alternate path or channel that does not require authentication.
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.