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CVE-2026-41115

Estado: AnalizadaMedia (4.3)—

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.

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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.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Apache — Kafka

CWE

Referencias

JSON original (NVD)

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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
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          "version": "2.0.3",
          "timestamp": "2026-06-02T16:49:44.110629Z"
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          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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          "privilegesRequired": "LOW",
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          "vendor": "Apache Software Foundation",
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  "published": "2026-06-02T10:16:25.107",
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      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "Se ha identificado una vulnerabilidad de autorización impropia en Apache Kafka.\n\nLa implementación de la API CONSUMER_GROUP_DESCRIBE (69) valida la operación DESCRIBE en el recurso GROUP en lugar de la operación READ documentada en la documentación oficial de Kafka y el KIP-848. Esta discrepancia puede resultar en Listas de Control de Acceso (ACLs) mal configuradas y posturas de seguridad no intencionadas, como otorgar permiso READ a usuarios que no deberían poder unirse/sincronizar grupos, o permitir a usuarios sin permiso READ (pero con permiso DESCRIBE) acceder a metadatos de grupo sensibles.\n\nEl permiso correcto para la API CONSUMER_GROUP_DESCRIBE es DESCRIBE GROUP, por lo que la implementación actual es correcta. Sin embargo, la documentación de Kafka, así como el KIP-848, se actualizarán para reflejar el permiso correcto. Aconsejamos a los usuarios de Kafka revisar las ACLs de grupo existentes para asegurar el principio de mínimo privilegio."
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  "lastModified": "2026-07-22T19:10:00.120",
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