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BIT-kafka-2026-33558

Published Apr 22, 2026·Last modified May 5, 2026
Affected Components(0)

No affected components available

Description

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.

Risk Scores
Base Score
0.0

Measures severity based on intrinsic characteristics of the vulnerability, independent of environment.

Threat Intelligence
0.0

No exploitation activity has been observed at this time. Continue routine monitoring.

EPSS
0.63%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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