Vulnerability-Lookup

GHSA-P5R3-M3W4-4FJ6

Vulnerability from github – Published: 2026-06-02 12:31 – Updated: 2026-06-02 21:30

Details

An improper authorization vulnerability has been identified in Apache Kafka.

The implementation of the CONSUMER_GROUP_DESCRIBE (69) API validates the DESCRIBE operation on the GROUP resource instead of the READ operation that documented in the official kafka documentation and the KIP-848. This discrepancy can result in misconfigured Access Control Lists (ACLs) and unintended security postures, like granting READ permission to users who should not be able to join/sync groups, or allowing users without READ permission (but with DESCRIBE permission) to access sensitive group metadata.

The correct permission for CONSUMER_GROUP_DESCRIBE API is DESCRIBE GROUP so the current implementation is correct. However, the kafka documentation as well as the KIP-848 will be updated to reflect the correct permission. We advise the Kafka users to review existing group ACLs to ensure the principle of least privilege.

Severity

4.3 (Medium)


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

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JSON

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  "aliases": [
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  ],
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    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-02T10:16:25Z",
    "severity": "MODERATE"
  },
  "details": "An improper authorization vulnerability has been identified in Apache Kafka.\n\nThe implementation of the CONSUMER_GROUP_DESCRIBE (69) API validates the DESCRIBE operation on the GROUP resource instead of the READ operation that documented in the official kafka documentation and the KIP-848. This discrepancy can result in misconfigured Access Control Lists (ACLs) and unintended security postures, like granting READ permission to users who should not be able to join/sync groups, or allowing users without READ permission (but with DESCRIBE permission) to access sensitive group metadata.\n\nThe correct permission for CONSUMER_GROUP_DESCRIBE API is DESCRIBE GROUP so the current implementation is correct. However, the kafka documentation as well as the KIP-848 will be updated to reflect the correct permission. We advise the Kafka users to review existing group ACLs to ensure the principle of least privilege.",
  "id": "GHSA-p5r3-m3w4-4fj6",
  "modified": "2026-06-02T21:30:41Z",
  "published": "2026-06-02T12:31:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41115"
    },
    {
      "type": "WEB",
      "url": "https://kafka.apache.org/cve-list"
    },
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      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/06/02/5"
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  "schema_version": "1.4.0",
  "severity": [
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      "type": "CVSS_V3"
    }
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}

CVE-2026-41115 (GCVE-0-2026-41115)

Vulnerability from cvelistv5 – Published: 2026-06-02 08:56 – Updated: 2026-06-02 17:33

Title

Apache Kafka: Improper Authorization in CONSUMER_GROUP_DESCRIBE API

Summary

An improper authorization vulnerability has been identified in Apache Kafka. The implementation of the CONSUMER_GROUP_DESCRIBE (69) API validates the DESCRIBE operation on the GROUP resource instead of the READ operation that documented in the official kafka documentation and the KIP-848. This discrepancy can result in misconfigured Access Control Lists (ACLs) and unintended security postures, like granting READ permission to users who should not be able to join/sync groups, or allowing users without READ permission (but with DESCRIBE permission) to access sensitive group metadata. The correct permission for CONSUMER_GROUP_DESCRIBE API is DESCRIBE GROUP so the current implementation is correct. However, the kafka documentation as well as the KIP-848 will be updated to reflect the correct permission. We advise the Kafka users to review existing group ACLs to ensure the principle of least privilege.

Severity

4.3 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-285 - Improper Authorization

Assigner

apache

References

2 references

URL	Tags
https://kafka.apache.org/cve-list	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/06/02/5

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache Kafka	Affected: 4.0.0 , ≤ 4.3.0 (semver)

Credits

Luke Chen <showuon@gmail.com>

Show details on NVD website

JSON

To clipboard

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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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-P5R3-M3W4-4FJ6

CVE-2026-41115 (GCVE-0-2026-41115)

Tags

Sightings

Nomenclature