Versions < 1.5 of the Kubernetes ingress default backend, which handles invalid ingress traffic, exposed prometheus metrics publicly.
{
"cpe": "cpe:2.3:a:kubernetes:nginx_ingress_controller:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "1.5.0"
}
],
"source": "CPE_FIELD"
}