Because it relies on a slightly-older version of mail, it looks like actionmailer is susceptible to https://github.com/mikel/mail/pull/1097. The mail gem is already patched, but it hasn't been pulled in yet.
It looks like another fix might be to update Ruby to 2.4.
Because it relies on a slightly-older version of
mail, it looks likeactionmaileris susceptible to https://github.com/mikel/mail/pull/1097. Themailgem is already patched, but it hasn't been pulled in yet.It looks like another fix might be to update Ruby to 2.4.