I'm marking this as a security bug out of an abundance of caution.
I am surprised to see that the listadmins mailing list archive is public. I expected it to be restricted to members only. I would bring up this question with the list administrators, but the only list administrator shown is Thehelpfulone and he has been inactive on public wikis since April 2017, and has made only two public edits on wikis in all of 2017.
I suggest restricting the mailing list archive to members only.