4 ms·

It appears they silently closed a critical vulnerability recently [0] [0] https://twitter.com/StackSmashing/status/474214532114812928 https://twitter.com/Stack

• mike-cardwell 12y ago
  My name is on https://protonmail.ch/blog/protonmail-security-contributors/ https://protonmail.ch/blog/protonmail-security-contributors/ because I reported a critical XSS vulnerability to them when they were previously mentioned on here. All you needed to do was send an email which contained a From header with script embedded in the name part: From: "<script>Do evil</script>" <address@example.com> All I did to find this vulnerability was sign up for an account and then plonk the email address they gave me into https://emailprivacytester.com/ https://emailprivacytester.com/ (of which I am the author)