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 * AlterUserScramCredentialsRequest * ExpireDelegationTokenRequest * IncrementalAlterConfigsRequest * RenewDelegationTokenRequest * SaslAuthenticateRequest * createDelegationTokenResponse * describeDelegationTokenResponse * 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.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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 * AlterUserScramCredentialsRequest * ExpireDelegationTokenRequest *
    IncrementalAlterConfigsRequest * RenewDelegationTokenRequest * SaslAuthenticateRequest *
    createDelegationTokenResponse * describeDelegationTokenResponse * 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. (CVE-2026-33558)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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 * AlterUserScramCredentialsRequest * ExpireDelegationTokenRequest *     IncrementalAlterConfigsRequest * RenewDelegationTokenRequest * SaslAuthenticateRequest *     createDelegationTokenResponse * describeDelegationTokenResponse * 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. (CVE-2026-33558)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
462014	Echo: org.apache.kafka:kafka-clients: security update to 3.9.2	Tenable Cloud Security	Echo Local Security Checks	Local	medium
462014	Echo: org.apache.kafka:kafka-clients: security update to 3.9.2	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	medium
308166	Linux Distros Unpatched Vulnerability : CVE-2026-33558	Nessus	Misc.	Local	medium

Detections

Analytics

CVE-2026-33558

medium

Tenable Plugins

medium

medium

medium