Last updated 2 years ago
https://twitter.com/3XS0/status/1297270601661526016
https://medium.com/@dimazarno/bypassing-email-filter-which-leads-to-sql-injection-e57bcbfc6b17
http://sphinx.mythic-beasts.com/~pdw/cgi-bin/emailvalidate
https://twitter.com/intigriti/status/1078318258661531648?lang=en
https://infosecwriteups.com/an-unexpected-bounty-email-bounce-issues-b9f24a35eb68
https://yashswarup12.medium.com/how-the-use-of-hidden-form-fields-lead-to-email-verification-bypass-3c8d7c25bd31
