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CVE-2026-86089

7.1, high

Apache Software Foundation Apache NiFi Missing Authorization Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
7.1, high high CVSS v3.1
EPSS, next 30 days
0.4% higher than 36.3% of scored CVEs
Exploitation
No public evidence
Published
16 Sept 2026a month ago

Description

Apache NiFi 2.11.0 supports migrating the contents of a version-controlled Process Group into a Connector using REST API methods that list eligible migration sources and submit migration requests. The framework authorized both methods against the target Connector alone, without evaluating access to the Process Groups involved. The absence of Process Group authorization allowed an authenticated user with read access to a Connector to enumerate the identifiers, names, and flow registry details of version-controlled Process Groups outside the scope of granted read policies. It also allowed a user with write access to a Connector to migrate a Process Group without write access to that Process Group, copying the flow definition, referenced assets, and component state into the Connector, and leaving the source Process Group disabled and renamed. Migration excludes sensitive property values and requires the source Process Group to be stopped with empty queues, which limits the scope of exposure. Apache NiFi installations that do not implement component-level authorization policies for Process Groups are not subject to this vulnerability, because the framework enforces Connector write permissions as the security boundary. Upgrading to Apache NiFi 2.12.0 is the recommended mitigation, which filters migration sources to Process Groups the requesting user is authorized to read, and requires write access to the source Process Group when submitting a migration request.

Details

Vendor
Apache Software Foundation
Product
Apache NiFi
Weakness
CWE-862 (opens in a new tab)
Status
Analyzed
Updated
21 Sept 2026
Assigner
security@apache.org

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

References 2

Advisories 2

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Apache Software Foundation CVEs

Every Apache Software Foundation CVE we hold

Same vendor in what we hold, not a known link between the flaws.

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  • CVE-2026-75005 Inefficient Algorithmic Complexity vulnerability in Apache APISIX EPSS 0.7% 7.5, high
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Beyond this page

Is CVE-2026-86089 in your network?

This page tells you how dangerous CVE-2026-86089 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.