The myCred WordPress plugin before 2.4.4.1 does not have any authorisation in place in its mycred-tools-select-user AJAX action, allowing any authenticated user, such as subscriber to call and retrieve all email addresses from the blog
[
{
"vendor": "Unknown",
"product": "myCred",
"versions": [
{
"status": "affected",
"versionType": "custom",
"version": "0",
"lessThan": "2.4.4.1"
}
],
"defaultStatus": "unaffected",
"collectionURL": "https://wordpress.org/plugins"
}
]