Discourse is an open source platform for community discussion. Moderators can see the Screened emails list in the admin dashboard, and through that can learn the email of a user. This problem is patched in the latest version of Discourse. Users unable to upgrade should remove moderator role from untrusted users.
{
"cpes": [
"cpe:2.3:a:discourse:discourse:*:*:*:*:stable:*:*:*",
"cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*",
"cpe:2.3:a:discourse:discourse:*:*:*:*:beta:*:*:*"
],
"severity": "Low"
}