CVE-2026-33558
CVE-2026-33558 · Apache Kafka, Apache Kafka Clients: Information Exposure Through Network Client Log Output
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 5.3 · Medium · EPSS 0.6%
- Published
- Updated
Stack: system
Affected products and versions
apache kafka
- Versions
- ≥ 0.11.0, ≤ 3.9.1: Affected (semver)
- 4.0.0: Affected (semver)
No fix published
apache kafka clients
- Versions
- ≥ 0.11.0, ≤ 3.9.1: Affected (semver)
- 4.0.0: Affected (semver)
No fix published
kafka Ubuntu:Pro:18.04:LTS
- Versions
- 2.2.0u2-0ubuntu3.1
- 2.2.0u2-0ubuntu3.2
- 2.2.2u1-0ubuntu1+esm2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published