Apache Kafka Clients
Monthly
Buffer use-after-free in Apache Kafka Java producer client (versions ≤3.9.1, ≤4.0.1, ≤4.1.1) can silently route messages to incorrect topics when batch expiration races with in-flight network requests. CVSS 8.7 (High) with network-accessible attack vector and high complexity. CISA SSVC indicates no active exploitation, non-automatable attack, and partial technical impact. No public exploit identified at time of analysis. EPSS data not provided, but the combination of high CVSS, cross-scope impact (S:C), and dual confidentiality/integrity impact warrants prioritization for environments processing sensitive message streams.
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. While DEBUG logging is not enabled by default (INFO is the standard), organizations that enable DEBUG logging for troubleshooting inadvertently create persistent records of authentication material and secrets that can be harvested by local log readers or accessed via log aggregation systems. CVSS 5.3 reflects low network attack surface (requires prior DEBUG enablement), but SSVC rates this as automatable with partial technical impact, suitable for prioritization in environments using centralized logging.
Buffer use-after-free in Apache Kafka Java producer client (versions ≤3.9.1, ≤4.0.1, ≤4.1.1) can silently route messages to incorrect topics when batch expiration races with in-flight network requests. CVSS 8.7 (High) with network-accessible attack vector and high complexity. CISA SSVC indicates no active exploitation, non-automatable attack, and partial technical impact. No public exploit identified at time of analysis. EPSS data not provided, but the combination of high CVSS, cross-scope impact (S:C), and dual confidentiality/integrity impact warrants prioritization for environments processing sensitive message streams.
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. While DEBUG logging is not enabled by default (INFO is the standard), organizations that enable DEBUG logging for troubleshooting inadvertently create persistent records of authentication material and secrets that can be harvested by local log readers or accessed via log aggregation systems. CVSS 5.3 reflects low network attack surface (requires prior DEBUG enablement), but SSVC rates this as automatable with partial technical impact, suitable for prioritization in environments using centralized logging.