In Apache NiFi before 0.7.2 and 1.x before 1.1.2 in a cluster environment, the proxy chain serialization/deserialization is vulnerable to an injection attack where a carefully crafted username could impersonate another user and gain their permissions on a replicated request to another node.
[
{
"product": "Apache NiFi",
"vendor": "Apache Software Foundation",
"versions": [
{
"status": "affected",
"version": "0.7.0"
},
{
"status": "affected",
"version": "0.7.1"
},
{
"status": "affected",
"version": "1.1.0"
},
{
"status": "affected",
"version": "1.1.1"
}
]
}
]