What’s Vulnerable › Vulnerabilities

CVE-2026-112331: Motor.NET < 0.19.0 Kafka Denial of Service via Structured CloudEvent Mapping

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-22 · updated 2026-10-23
• Weakness: CWE-755

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.

Affected products

• GDATASoftwareAG motornet: before 0.19.0 — fixed in 0.19.0

How to fix

Upgrade to a fixed version: GDATASoftwareAG motornet 0.19.0. Check the vendor advisory for mitigations.

References

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

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