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CVE-2026-39816— Apache NiFi: Missing Execute Code Required Permission on TinkerpopClientService

AI Predicted 7.8 Difficulty: Moderate EPSS 0.02% · P4

Possible ATT&CK Techniques 1AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProductVersion RangeStatus
Apache Software FoundationApache NiFi2.0.0-M1≤ 2.8.0affected
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I. Basic Information for CVE-2026-39816

Vulnerability Information
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Vulnerability Title
Apache NiFi: Missing Execute Code Required Permission on TinkerpopClientService
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制缺失
Source: NVD (National Vulnerability Database)
Vulnerability Title
Apache NiFi 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache NiFi是美国阿帕奇（Apache）基金会的一套数据处理和分发系统。该系统主要用于数据路由、转换和系统中介逻辑。 Apache NiFi 2.0.0-M1版本至2.8.0版本存在安全漏洞，该漏洞源于可选扩展组件TinkerpopClientService缺少Restricted注解，可能导致未授权用户配置服务并执行Groovy脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Apache Software FoundationApache NiFi 2.0.0-M1 ~ 2.8.0 -

II. Public POCs for CVE-2026-39816

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III. Intelligence Information for CVE-2026-39816

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Mailing list · 1

Same Patch Batch · Apache Software Foundation · 2026-05-08 · 8 CVEs total

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IV. Related Vulnerabilities

Same product: Apache NiFi
Same vendor: Apache Software Foundation
Same weakness: CWE-862

V. Comments for CVE-2026-39816

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