EUVD-2026-23849
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Lifecycle Timeline
1DescriptionNVD
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.
AnalysisAI
Apache Kafka's NetworkClient component logs entire request and response payloads at DEBUG level, exposing sensitive authentication credentials, delegation tokens, and configuration data in plaintext logs. This affects Kafka versions 0.11.0 through 3.9.1 and 4.0.0 across the broker and client libraries. …
Sign in for full analysis, threat intelligence, and remediation guidance.
Share
External POC / Exploit Code
Leaving vuln.today