CVE-2026-41115

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Apache Kafka", "vendor": "Apache Software Foundation", "versions": [{"lessThanOrEqual": "4.3.0", "status": "affected", "version": "4.0.0", "versionType": "semver"}]}], "source": "security@apache.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:apache:kafka:*:*:*:*:*:*:*:*", "matchCriteriaId": "61D7227C-2896-457A-AE72-7D2957DACF19", "versionEndIncluding": "4.3.0", "versionStartIncluding": "4.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"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 autorizaci\u00f3n impropia en Apache Kafka.\n\nLa implementaci\u00f3n de la API CONSUMER_GROUP_DESCRIBE (69) valida la operaci\u00f3n DESCRIBE en el recurso GROUP en lugar de la operaci\u00f3n READ documentada en la documentaci\u00f3n 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 deber\u00edan 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 implementaci\u00f3n actual es correcta. Sin embargo, la documentaci\u00f3n de Kafka, as\u00ed como el KIP-848, se actualizar\u00e1n para reflejar el permiso correcto. Aconsejamos a los usuarios de Kafka revisar las ACLs de grupo existentes para asegurar el principio de m\u00ednimo privilegio."}], "id": "CVE-2026-41115", "lastModified": "2026-07-22T19:10:00.120", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-41115", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-02T16:49:44.110629Z", "version": "2.0.3"}}]}, "published": "2026-06-02T10:16:25.107", "references": [{"source": "security@apache.org", "tags": ["Vendor Advisory"], "url": "https://kafka.apache.org/cve-list"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2026/06/02/5"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-285"}], "source": "security@apache.org", "type": "Secondary"}]}

{}

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