In Apache NiFi 1.0.0 to 1.11.4, the notification service manager and various policy authorizer and user group provider objects allowed trusted administrators to inadvertently configure a potentially malicious XML file. The XML file has the ability to make external calls to services (via XXE).
[
{
"product": "Apache NiFi",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "Apache NiFi 1.0.0 to 1.11.4"
}
]
}
]