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CVE-2026-39816GHSA-2J9M-25XV-MP6RBIT-NIFI-2026-39816

Apache NiFi: Missing Execute Code Required Permission on TinkerpopClientService

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 2.9.0
1 proof of concept on GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

The optional extension component TinkerpopClientService is missing the Restricted annotation with the Execute Code Required Permission in Apache NiFi 2.0.0-M1 through 2.8.0. The TinkerpopClientService supports configuration of ByteCode Submission for the Script Submission Type, enabling Groovy Script execution in the service prior to submitting the query. The missing Restricted annotation allows users without the Execute Code Permission to configure the Service in installations that use fine-grained authorization and have the optional TinkerpopClientService installed. Apache NiFi installations that do not have the nifi-other-graph-services-nar installed are not subject to this vulnerability. Upgrading to Apache NiFi 2.9.0 is the recommended mitigation.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • org.apache.nifi:nifi-other-graph-services-nar

    From 2.0.0-M1 · through 2.8.0

  • org.apache.nifi:nifi-other-graph-services-narMaven

    From 2.0.0-M1 · fixed in 2.9.0

References 2

lists.apache.org

GitHub · ZeroPathAI/nifi-CVE-2026-39816-poc