Apache Kafka, Apache Kafka Clients: Information Exposure Through Network Client Log Output
Summary
Apache Kafka, Apache Kafka Clients: Information Exposure Through Network Client Log Output
Original description
The description as published by the source.
Information exposure vulnerability has been identified in Apache Kafka.
The NetworkClient component will output entire requests and responses information in the DEBUG log level in the logs. By default, the log level is set to INFO level. If the DEBUG level is enabled, the sensitive information will be exposed via the requests and responses output log. The entire lists of impacted requests and responses are:
-
AlterConfigsRequest
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AlterUserScramCredentialsRequest
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ExpireDelegationTokenRequest
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IncrementalAlterConfigsRequest
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RenewDelegationTokenRequest
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SaslAuthenticateRequest
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createDelegationTokenResponse
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describeDelegationTokenResponse
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SaslAuthenticateResponse
This issue affects Apache Kafka: from any version supported the listed API above through v3.9.1, v4.0.0. We advise the Kafka users to upgrade to v3.9.2, v4.0.1, or later to avoid this vulnerability.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Affected packages
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Ubuntu UBUNTU-CVE-2026-33558 kafka
References
- advisory kafka.apache.org
- advisory lists.apache.org
- web openwall.com
- web nvd.nist.gov