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CVE-2026-39816 — Vulnerability in...

HIGH

Apache NiFi is missing the Restricted annotation with the Execute Code Required Permission

Published May 8, 2026Updated May 14, 2026Source: osv

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.

Advisory Timeline

  • First published May 8, 2026 (157 days ago).
  • Last revised May 14, 2026 — 6 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Maven
Update org.apache.nifi:nifi-other-graph-services-nar to 2.9.0 or later
<!-- Update pom.xml dependency version to 2.9.0 for org.apache.nifi:nifi-other-graph-services-nar -->

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: maven (1).

PackageEcosystemAffectedFixed In
org.apache.nifi:nifi-other-graph-services-nar
maven
2.0.0, 2.0.0-M1, 2.0.0-M2, 2.0.0-M3 (+11 more)2.9.0

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-862
    Missing AuthorizationMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 8.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2026-39816?
Apache NiFi is missing the Restricted annotation with the Execute Code Required Permission This vulnerability has been assigned a severity rating of HIGH (CVSS score: 8.8/10).
How do I check if my project is affected by CVE-2026-39816?
CVE-2026-39816 affects org.apache.nifi:nifi-other-graph-services-nar. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-39816 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
8.8

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-2j9m-25xv-mp6r
BIT-nifi-2026-39816

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