{"id":"BIT-kafka-2026-41115","summary":"Apache Kafka: Improper Authorization in CONSUMER_GROUP_DESCRIBE API","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.","aliases":["CVE-2026-41115"],"modified":"2026-09-08T08:48:06.520490734Z","published":"2026-06-05T05:43:42.489Z","database_specific":{"severity":"Medium","cpes":["cpe:2.3:a:apache:kafka:*:*:*:*:*:*:*:*","cpe:2.3:a:apache:kafka:*:*:*:*:*:maven:*:*"]},"references":[{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2026/06/02/5"},{"type":"ADVISORY","url":"https://kafka.apache.org/cve-list"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41115"}],"affected":[{"package":{"name":"kafka","ecosystem":"Bitnami","purl":"pkg:bitnami/kafka"},"ranges":[{"type":"SEMVER","events":[{"introduced":"4.0.0"},{"fixed":"4.3.1"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/kafka/BIT-kafka-2026-41115.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"}]}],"schema_version":"1.9.0"}