Vulnerability-Lookup

GHSA-R427-J2H7-WV3M

Vulnerability from github – Published: 2026-06-18 13:04 – Updated: 2026-06-18 13:04

Summary

Strimzi: Unrestricted access to all Secrets within namespace watched by the Topic operator

Details

Impact

When only the Topic or only the User operators are deployed as part of the Entity Operator in the Kafka custom resource, the RBAC rights are not following the principle of least-privilege and the Entity Operator ServiceAccount still has access rights corresponding to both operators. That might allow the ServiceAccount to access KafkaUser custom resources and Secrets when the User operator is not deployed and access KafkaTopic custom resources when the Topic operator is not deployed.

Patches

The issue is fixed in Strimzi 1.0.1 and 1.1.0.

Workarounds

There is no workaround for this issue.

Severity

5.4 (Medium)


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

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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.0.0"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "io.strimzi:strimzi"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-55226"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-269",
      "CWE-272"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-18T13:04:49Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Impact\n\nWhen only the Topic or only the User operators are deployed as part of the Entity Operator in the `Kafka` custom resource, the RBAC rights are not following the principle of least-privilege and the Entity Operator ServiceAccount still has access rights corresponding to both operators. That might allow the ServiceAccount to access `KafkaUser` custom resources and Secrets when the User operator is not deployed and access `KafkaTopic` custom resources when the Topic operator is not deployed.\n\n### Patches\n\nThe issue is fixed in Strimzi 1.0.1 and 1.1.0.\n\n### Workarounds\n\nThere is no workaround for this issue.",
  "id": "GHSA-r427-j2h7-wv3m",
  "modified": "2026-06-18T13:04:49Z",
  "published": "2026-06-18T13:04:49Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/strimzi/strimzi-kafka-operator/security/advisories/GHSA-r427-j2h7-wv3m"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/strimzi/strimzi-kafka-operator"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Strimzi: Unrestricted access to all Secrets within namespace watched by the Topic operator"
}

CVE-2026-55226 (GCVE-0-2026-55226)

Vulnerability from cvelistv5 – Published: 2026-09-15 17:14 – Updated: 2026-09-16 15:02

Title

Strimzi: Unrestricted access to all Secrets within namespace watched by the Topic operator

Summary

Strimzi provides a way to run an Apache Kafka cluster on Kubernetes or OpenShift in various deployment configurations. In Strimzi 1.0.0 and earlier, deploying only the Topic Operator or only the User Operator through the Kafka custom resource leaves the Entity Operator ServiceAccount with RBAC permissions for both components. The excess permissions can allow access to KafkaUser custom resources and Secrets when the User Operator is absent, or access to KafkaTopic custom resources when the Topic Operator is absent. This issue is fixed in versions 1.0.1 and 1.1.0.

Severity

5.4 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-16 15:02 UTC

CWE

CWE-269 - Improper Privilege Management
CWE-272 - Least Privilege Violation

Assigner

GitHub_M mitre root

References

6 references

URL	Tags
https://github.com/strimzi/strimzi-kafka-operator…	x_refsource_CONFIRM
https://github.com/strimzi/strimzi-kafka-operator…	x_refsource_MISC
https://github.com/strimzi/strimzi-kafka-operator…	x_refsource_MISC
https://github.com/strimzi/strimzi-kafka-operator…	x_refsource_MISC
https://github.com/strimzi/strimzi-kafka-operator…	x_refsource_MISC
https://github.com/strimzi/strimzi-kafka-operator…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
strimzi	strimzi-kafka-operator	Affected: < 1.0.1

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-55226",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-16T15:02:43.140179Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-16T15:02:50.239Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "strimzi-kafka-operator",
          "vendor": "strimzi",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.0.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Strimzi provides a way to run an Apache Kafka cluster on Kubernetes or OpenShift in various deployment configurations. In Strimzi 1.0.0 and earlier, deploying only the Topic Operator or only the User Operator through the Kafka custom resource leaves the Entity Operator ServiceAccount with RBAC permissions for both components. The excess permissions can allow access to KafkaUser custom resources and Secrets when the User Operator is absent, or access to KafkaTopic custom resources when the Topic Operator is absent. This issue is fixed in versions 1.0.1 and 1.1.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-269",
              "description": "CWE-269: Improper Privilege Management",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-272",
              "description": "CWE-272: Least Privilege Violation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-15T17:14:21.491Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/strimzi/strimzi-kafka-operator/security/advisories/GHSA-r427-j2h7-wv3m",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/strimzi/strimzi-kafka-operator/security/advisories/GHSA-r427-j2h7-wv3m"
        },
        {
          "name": "https://github.com/strimzi/strimzi-kafka-operator/pull/12844",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/strimzi/strimzi-kafka-operator/pull/12844"
        },
        {
          "name": "https://github.com/strimzi/strimzi-kafka-operator/commit/b3bfeffcc30754c3e62e6f4afd8a76942cac440d",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/strimzi/strimzi-kafka-operator/commit/b3bfeffcc30754c3e62e6f4afd8a76942cac440d"
        },
        {
          "name": "https://github.com/strimzi/strimzi-kafka-operator/commit/f6c5207ba7ec89b46ce6720b8638d647e556a261",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/strimzi/strimzi-kafka-operator/commit/f6c5207ba7ec89b46ce6720b8638d647e556a261"
        },
        {
          "name": "https://github.com/strimzi/strimzi-kafka-operator/releases/tag/1.0.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/strimzi/strimzi-kafka-operator/releases/tag/1.0.1"
        },
        {
          "name": "https://github.com/strimzi/strimzi-kafka-operator/releases/tag/1.1.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/strimzi/strimzi-kafka-operator/releases/tag/1.1.0"
        }
      ],
      "source": {
        "advisory": "GHSA-r427-j2h7-wv3m",
        "discovery": "UNKNOWN"
      },
      "title": "Strimzi: Unrestricted access to all Secrets within namespace watched by the Topic operator"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-55226",
    "datePublished": "2026-09-15T17:14:21.491Z",
    "dateReserved": "2026-06-16T16:16:32.628Z",
    "dateUpdated": "2026-09-16T15:02:50.239Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

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

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