CVE-2026-112331
motornet: Motor.NET < 0.19.0 Kafka Denial of Service via Structured CloudEvent Mapping
GDATASoftwareAG motornet
CVSS
8.7HighExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.68%Chance of exploitation activity in the next 30 days, higher than 51% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 0.19.0motornetCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
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.
Text from CVE List
Affected versions 1
- motornetaffected: all versions before 0.19.0CVE List
References 4
- github.com/GDATASoftwareAG/motornet/releases/tag/v0.19.0Fixvia CVE List
- github.com/GDATASoftwareAG/motornet/pull/1785Fixvia CVE List
- github.com/GDATASoftwareAG/motornet/commit/b4b6979f5dd7447dd02312e27d766ae2e9d050c2Fixvia CVE List
- vulncheck.com/advisories/motor-net-kafka-denial-of-service-via-cloudevents-handlerAdvisoryvia CVE List