CVE-2026-39816 (GCVE-0-2026-39816)

Vulnerability from cvelistv5 – Published: 2026-05-08 13:38 – Updated: 2026-05-09 01:12
VLAI
Title
Apache NiFi: Missing Execute Code Required Permission on TinkerpopClientService
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.
Severity
7.5 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/AU:Y/R:I/V:C/RE:L/U:Green
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-08 14:36 UTC
CWE
Assigner
apache CNA under the mitre root
CNA scorecard B 76/100 over 1073 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Apache Software Foundation Apache NiFi Affected: 2.0.0-M1 , ≤ 2.8.0 (semver)
guessed Create a notification for this product.
Credits
John Walker from ZeroPath
Show details on NVD website
To clipboard 

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    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.