CVE-2026-112331

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.

Score

CVSS 4.0 8.7 High

Status

Deferred - disclosure@vulncheck.com

Published

2026-10-22

Last modified

2026-10-23

Weaknesses

CWE-755

Affected products

• Motornet (Gdatasoftwareag)

References

• https://github.com/GDATASoftwareAG/motornet/releases/tag/v0.19.0
• https://github.com/GDATASoftwareAG/motornet/pull/1785
• https://github.com/GDATASoftwareAG/motornet/commit/b4b6979f5dd7447dd02312e27d766ae2e9d050c2
• https://www.vulncheck.com/advisories/motor-net-kafka-denial-of-service-via-cloudevents-handler