Vulnerability-Lookup

GHSA-R2G5-993Q-664G

Vulnerability from github – Published: 2026-06-22 09:30 – Updated: 2026-09-11 22:09

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

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/S:P/AU:Y/R:U/V:C/RE:L/U:Clear

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.nifi:nifi-web-api"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.12.0"
            },
            {
              "fixed": "2.9.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-44914"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-11T22:09:37Z",
    "nvd_published_at": "2026-06-22T08:17:05Z",
    "severity": "HIGH"
  },
  "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.",
  "id": "GHSA-r2g5-993q-664g",
  "modified": "2026-09-11T22:09:37Z",
  "published": "2026-06-22T09:30:45Z",
  "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"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Apache NiFi: Missing authorization when replacing Process Groups with restricted components"
}

CVE-2026-44914 (GCVE-0-2026-44914)

Vulnerability from cvelistv5 – Published: 2026-06-22 07:38 – Updated: 2026-06-24 03:56

Title

Apache NiFi: Missing Authorization of Restricted Permissions when Replacing Flow Contents

Summary

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/S:P/AU:Y/R:U/V:C/RE:L/U:Clear

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-23 00:00 UTC

CWE

CWE-862 - Missing Authorization

Assigner

apache CNA under the mitre root

CNA scorecard B 76/100 over 1265 records in the last 180 days details

References

2 references

URL	Tags
https://lists.apache.org/thread/ydr34t03xd1n0t9oo…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/06/20/6

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache NiFi	Affected: 1.12.0 , ≤ 2.9.0 (semver)

Credits

Roberto Suggi Liverani from NATO Cyber Security Centre (NCSC)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2026-06-22T08:02:04.666Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/06/20/6"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-44914",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-23T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-24T03:56:11.221Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "defaultStatus": "unaffected",
          "packageName": "org.apache.nifi:nifi-web-api",
          "product": "Apache NiFi",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "lessThanOrEqual": "2.9.0",
              "status": "affected",
              "version": "1.12.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Roberto Suggi Liverani from NATO Cyber Security Centre (NCSC)"
        }
      ],
      "descriptions": [
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          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
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            }
          ],
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        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "YES",
            "Recovery": "USER",
            "Safety": "PRESENT",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "privilegesRequired": "HIGH",
            "providerUrgency": "CLEAR",
            "subAvailabilityImpact": "LOW",
            "subConfidentialityImpact": "LOW",
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            "userInteraction": "NONE",
            "valueDensity": "CONCENTRATED",
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            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "LOW"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
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      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "CWE-862 Missing Authorization",
              "lang": "en",
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      "providerMetadata": {
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        "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
        "shortName": "apache"
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      "references": [
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          "tags": [
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          "url": "https://lists.apache.org/thread/ydr34t03xd1n0t9oogpzogjrd5y93838"
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      ],
      "source": {
        "defect": [
          "NIFI-15845"
        ],
        "discovery": "UNKNOWN"
      },
      "timeline": [
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          "lang": "en",
          "time": "2026-04-27T07:00:00.000Z",
          "value": "reported"
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      ],
      "title": "Apache NiFi: Missing Authorization of Restricted Permissions when Replacing Flow Contents",
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  "cveMetadata": {
    "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
    "assignerShortName": "apache",
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    "datePublished": "2026-06-22T07:38:01.356Z",
    "dateReserved": "2026-05-08T04:30:00.505Z",
    "dateUpdated": "2026-06-24T03:56:11.221Z",
    "state": "PUBLISHED"
  },
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

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