| Package | Affected versions | Patched versions |
|---|---|---|
| org.apache.nifi:nifi | ≥ 1.0.0, < 1.5.0 | 1.5.0 |
| nifi | ≤ 1.4.0 |
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.
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