PatchTheCVEkafka vulnerabilities and fixes
Recent CVEs affecting kafka, with upgrade or downgrade steps. 3 tracked.
kafka has 3 tracked vulnerabilities, 1 critical. A fixed release or vendor patch exists for 3. Most recent: 2026-04-20. Highest priority: CVE-2026-33557 (score 57/100).
- CVE-2026-33557 CRITICAL 9.1 UPGRADE A possible security vulnerability has been identified in Apache Kafka. By default, the broker property `sasl.
- CVE-2026-35554 HIGH 8.7 UPGRADE A race condition in the Apache Kafka Java producer client’s buffer pool management can cause messages to be si
- CVE-2026-33558 MEDIUM 5.3 UPGRADE Information exposure vulnerability has been identified in Apache Kafka. The NetworkClient component will outp
FAQ
How do I fix kafka vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is kafka being exploited right now?
None of the tracked kafka CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which kafka CVE should I patch first?
CVE-2026-33557 currently ranks highest (57/100): A possible security vulnerability has been identified in Apache Kafka. By default, the broker property `sasl..