The Get Custom Field Values WordPress plugin before 4.0 allows users with a role as low as Contributor to access other posts metadata without validating the permissions. Eg. contributors can access admin posts metadata.
{
"cpe": "cpe:2.3:a:get_custom_field_values_project:get_custom_field_values:*:*:*:*:*:wordpress:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "4.0"
}
],
"source": "CPE_RANGE"
}