Magefan Blog GraphQL API Exposes Emails and Internal IDs to Unauthenticated Users

Information disclosure in the blogComments GraphQL query in Magefan Blog GraphQL for Magento 2 (magefan/module-blog-graph-ql) through 2.2.1 allows remote unauthenticated attackers to obtain blog commenter email addresses and internal customer and admin identifiers via a POST request to /graphql.