CVE-2026-112331 – Motor.NET < 0.19.0 Kafka Consumer Permanent DoS via Crafted CloudEvent Record

​CVE ID :CVE-2026-112331

Published : Oct. 22, 2026, 7:41 p.m. | 4 minutes ago

Description :Motor.NET before 0.19.0 contains a denial-of-service vulnerability that allows a remote attacker who can produce records to a consumed topic to crash the service permanently by sending a single crafted record. By setting the content-type header to application/cloudevents+json and omitting required CloudEvent attributes (id, source, type), the attacker triggers an ArgumentException in KafkaMessageConsumer.SingleMessageHandlingAsync that is treated as fatal, causing the host to stop and re-process the same poison record on every restart, resulting in a permanent crash-loop.

Severity: 8.7 | HIGH

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