description: In Apache NiFi 1.0.0 to 1.11.4, the NiFi download token (one-time password) mechanism used a fixed cache size and did not authenticate a request to create a download token, only when attempting to use the token to access the content. An unauthenticated user could repeatedly request download tokens, preventing legitimate users from requesting download tokens.
problem types: Denial of Service
affected:
{
product: Apache NiFi
vendor: n/a
versions:
status: affected, version: Apache NiFi 1.0.0 to 1.11.4
}