A malicious host header in an incoming HTTP request could cause NiFi to load resources from an external server. The fix to sanitize host headers and compare to a controlled whitelist was applied on the Apache NiFi 1.5.0 release. Users running a prior 1.x release should upgrade to the appropriate release.
[
{
"product": "Apache NiFi",
"vendor": "Apache Software Foundation",
"versions": [
{
"status": "affected",
"version": "1.0.0 - 1.4.0"
},
{
"status": "affected",
"version": "0.1.0 - 0.7.x"
}
]
}
]