org.apache.kafka:kafka-clients Known Vulnerabilities & Fixes
org.apache.kafka:kafka-clients has 2 known security vulnerabilities in Maven (Java). Upgrade to version 4.1.2 or later to resolve all known issues. Data sourced from OSV, enriched with EPSS exploit probability and CISA KEV.
Low Immediate Risk
No actively exploited vulnerabilities detected. Monitor and update in your next maintenance window.
Recommended safe version: 4.1.2
Upgrading to 4.1.2 or later resolves all 2 known vulnerabilities in org.apache.kafka:kafka-clients. Update your pom.xml or build.gradle to version 4.1.2.
Is org.apache.kafka:kafka-clients in your project?
Check if you're affected and upgrade to 4.1.2 to stay secure.
Security Summary
- 4 affected version ranges have been identified across these 2 advisories.
- 100% of known issues have a published fixed version.
- Remediation: Update the org.apache.kafka:kafka-clients version in your pom.xml or build.gradle
Vulnerabilities
2 unique vulnerabilities — sorted by exploitation risk (KEV → EPSS → CVSS). Click a CVE/GHSA ID for full details. First disclosed Apr 7, 2026, most recently Apr 20, 2026 (13 days apart).
| CVE / GHSA | Severity | Affected | Fixed In |
|---|---|---|---|
| CVE-2026-33557 Apache Kafka does not validate JWT tokens in its OAUTHBEARER authentication implementation | CRITICAL | 4.1.0, 4.1.1 | 4.1.2 |
| CVE-2026-35554 Apache Kafka Clients: Kafka Producer Message Corruption and Misrouting via Buffer Pool Race Condition | HIGH | 2.8.0, 2.8.1, 2.8.2, 3.0.0 (+31 more) | 3.9.2, 4.0.2, 4.1.2 |
About This Data
Vulnerability data for org.apache.kafka:kafka-clients is sourced from the Open Source Vulnerability (OSV) database, aggregating reports from GitHub Advisory Database, NIST NVD, and ecosystem-specific sources.
CVSS (Common Vulnerability Scoring System) scores reflect exploitability and impact. EPSS (Exploit Prediction Scoring System) scores indicate the probability of exploitation within the next 30 days. Vulnerabilities marked with are listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
Related Maven (Java) Packages
Other packages in this ecosystem, ranked by shared vulnerabilities where available.
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