CVE-2026-39816CWE-862

Apache NiFi: Missing Execute Code Required Permission on TinkerpopClientService

High · published May 8, 2026

CVSS v4.0
7.5
EPSS
1%
Percentile
58.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
7.5 · HIGH
Vector
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
EPSS
0.00889 · 58.9th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-05-08T13:38Z
EPSS history
Timeline
  • 08 MAY 13:38Z
    Apache NiFi: Missing Execute Code Required Permission on TinkerpopClientService
    cvelistv5