CVE-2017-15703: Apache Nifi

Medium severity, CVSS 5.0. EPSS: 0.9% chance of exploitation in the next 30 days.

Any authenticated user (valid client certificate but without ACL permissions) could upload a template which contained malicious code and caused a denial of service via Java deserialization attack. The fix to properly handle Java deserialization was applied on the Apache NiFi 1.4.0 release. Users running a prior 1.x release should upgrade to the appropriate release.

Affected products

• Apache Nifi: from 1.0.0, up to and including 1.4.0

Published 2018-01-25. Last modified 2026-06-17.