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[Dominic-Marcelino]

The um-block-emails extensions uses a domain list from an external repository. While it is already a potential risk to import an external list, I'd highly suggest to import it from github direcly instead of a third party service to prevent any thrid-party modification as we've seen with the polyfill.io attack (and more in the past).

Therefore I suggest to replace the URL with the raw GH-URL:

Extended/src/um-block-emails/src/Core.php

Lines 17 to 20 in d075928

	/**
	* CDN API URL
	*/
	const API_URL = 'https://rawcdn.githack.com/disposable/disposable-email-domains/master/domains.json';