CVE-2026-112331

Motor.NET < 0.19.0 Kafka Denial of Service via Structured CloudEvent Mapping

HIGH
7.5
CVSS Score
Published: October 22, 2026 at 07:41 PM UTC
Updated: October 23, 2026 at 05:06 PM UTC
1 product affected across 1 vendormotornet

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Severity
HIGH7.5
Exploit prediction
EPSS 0.7%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

CVSS

7.5HIGHVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-755

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