CVE-2026-44914: Apache NiFi Missing Authorization When Replacing Process Vulnerability

HIGH
Advisory Identifier: GHSA-r2g5-993q-664g
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CWE-862
Published
Advisory Summary

CVE-2026-44914 is a HIGH missing authorization when replacing process vulnerability (CWE-862: Missing Authorization) affecting Apache NiFi libraries in the Maven ecosystem. The issue involves missing authorization when replacing process groups with restricted components. Remediation is available by upgrading affected packages to version 2.9.0.

CVE-2026-44914 at a Glance

CVE Identifier CVE-2026-44914
GHSA Identifier GHSA-r2g5-993q-664g
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-862: Missing Authorization
Affected Product Apache NiFi
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-44914

To remediate this vulnerability, upgrade all affected Apache NiFi dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.apache.nifi:nifi-web-api fixed: 2.9.0 
<dependency>
    <groupId>org.apache.nifi</groupId>
    <artifactId>nifi-web-api</artifactId>
    <version>2.9.0</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=org.apache.nifi

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-44914, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.apache.nifi

Analyze the terminal output to locate any version of Apache NiFi in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.9.0), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.apache.nifi command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-862: Missing Authorization, where the product does not perform an authorization check when an actor attempts to access a resource or perform an action. In Apache NiFi, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Apache NiFi 1.12.0 through 2.9.0 are missing authorization when replacing Process Groups that include extension components with specific Required Permissions based on the Restricted annotation. The Restricted annotation indicates additional privileges required, but framework authorization did not check restricted status when handling requests to replace Process Groups. The missing authorization permits a user with general write access to add components with Restricted status. Apache NiFi installations that do not implement specific authorization for Restricted components are not subject to this vulnerability because the framework enforces write permissions as the security boundary. Upgrading to Apache NiFi 2.9.0 is the recommended mitigation, which removes the implementation of Restricted status authorization from the framework.

CVE-2026-44914 Affected Apache NiFi Versions

1 component(s)
Fixed Versions:
2.9.0
Product / Package Ecosystem Affected Versions Fixed Version
org.apache.nifi:nifi-web-api
maven/org.apache.nifi/nifi-web-api
Maven
≥ 1.12.0
< 2.9.0
2.9.0

References

NVD — CVE-2026-44914 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-44914
Security Fix Commit FIX COMMIT
https://github.com/apache/nifi/commit/8fb3240441282825b6ef131b856c67b2476aeb28
Apache NiFi Source Repository REPOSITORY
https://github.com/apache/nifi
lists.apache.org/thread/ydr34t03xd1n... WEB
https://lists.apache.org/thread/ydr34t03xd1n0t9oogpzogjrd5y93838
Apache NiFi Security Information SECURITY
http://www.openwall.com/lists/oss-security/2026/06/20/6

Frequently Asked Questions

What is CVE-2026-44914?
CVE-2026-44914 is a security vulnerability in Apache NiFi involving Missing authorization when replacing Process Groups with restricted components under CWE-862: Missing Authorization.
Which Apache NiFi versions are affected?
Affected versions include releases prior to 2.9.0 across affected packages: org.apache.nifi:nifi-web-api.
What version fixes CVE-2026-44914?
Upgrading to 2.9.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is nifi-web-api affected?
Yes, org.apache.nifi:nifi-web-api is affected in releases prior to 2.9.0. Upgrade your dependency to 2.9.0 or later.
What CWE is associated with CVE-2026-44914?
CVE-2026-44914 is classified under CWE-862: Missing Authorization (The product does not perform an authorization check when an actor attempts to access a resource or perform an action.).
How can I check Maven dependencies for CVE-2026-44914?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.apache.nifi'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-r2g5-993q-664g",
  "modified" : "2026-09-11T22:09:37Z",
  "published" : "2026-06-22T09:30:45Z",
  "aliases" : [ "CVE-2026-44914" ],
  "summary" : "Apache NiFi: Missing authorization when replacing Process Groups with restricted components",
  "details" : "Apache NiFi 1.12.0 through 2.9.0 are missing authorization when replacing Process Groups that include extension components with specific Required Permissions based on the Restricted annotation. The Restricted annotation indicates additional privileges required, but framework authorization did not check restricted status when handling requests to replace Process Groups. The missing authorization permits a user with general write access to add components with Restricted status. Apache NiFi installations that do not implement specific authorization for Restricted components are not subject to this vulnerability because the framework enforces write permissions as the security boundary. Upgrading to Apache NiFi 2.9.0 is the recommended mitigation, which removes the implementation of Restricted status authorization from the framework.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "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/S:P/AU:Y/R:U/V:C/RE:L/U:Clear"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.nifi:nifi-web-api"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.12.0"
      }, {
        "fixed" : "2.9.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-44914"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/nifi/commit/8fb3240441282825b6ef131b856c67b2476aeb28"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/nifi"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/ydr34t03xd1n0t9oogpzogjrd5y93838"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2026/06/20/6"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-862" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-11T22:09:37Z",
    "nvd_published_at" : "2026-06-22T08:17:05Z"
  }
}