In Apache Kafka versions between 0.11.0.0 and 2.1.0, it is possible to manually craft a Produce request which bypasses transaction/idempotent ACL validation. Only authenticated clients with Write permission on the respective topics are able to exploit this vulnerability. Users should upgrade to 2.1.1 or later where this vulnerability has been fixed.
In Apache Kafka 0.10.0.0 to 0.10.2.1 and 0.11.0.0 to 0.11.0.1, authenticated Kafka clients may use impersonation via a manually crafted protocol message with SASL/PLAIN or SASL/SCRAM authentication when using the built-in PLAIN or SCRAM server implementations in Apache Kafka.
In Apache Kafka 0.9.0.0 to 0.9.0.1, 0.10.0.0 to 0.10.2.1, 0.11.0.0 to 0.11.0.2, and 1.0.0, authenticated Kafka users may perform action reserved for the Broker via a manually created fetch request interfering with data replication, resulting in data loss.
Apache Kafka: Improper Authorization in CONSUMER_GROUP_DESCRIBE API
Published 2026-06-02 · Analyzed
4.3EPSS 0.005
Demo
ThreatFusionAI™ Product Walkthrough
The fastest way to see what ThreatFusionAI does is to run a search. Paste any hash, IP, domain or CVE and you'll get the full report, the connected indicators and the actor attribution in one pass.
What you'll see
• Verdicts from multiple antivirus engines
• The connected IOC graph you can click through
• Ranked threat actors based on ATT&CK overlap
Next step
Start with a free search, no card needed. Check the plans if you need more volume.
ThreatFusionAI AssistantAI help & guidance
AI assistant — can make mistakes. Verify important results.