---
id: CVE-2026-112332
title: Motor.NET < 0.19.0 Denial of Service via JsonNet Deserialization
summary: >-
  Motor.NET before 0.19.0 contains an uncaught exception vulnerability in
  JsonNetDeserializer.Deserialize that allows a remote attacker who can publish
  to a consumed queue or topic to crash the service permanently by sending
  structurally v…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-755
vendor: GDATASoftwareAG
product: motornet
affected:
  - motornet < 0.19.0
published: '2026-10-22'
updated: '2026-10-22'
sourceUpdated: '2026-10-22T19:42:17.808Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-112332'
references:
  - url: 'https://github.com/GDATASoftwareAG/motornet/releases/tag/v0.19.0'
    label: Fixed Release Tag
  - url: 'https://github.com/GDATASoftwareAG/motornet/pull/1785'
    label: Pull Request
  - url: >-
      https://github.com/GDATASoftwareAG/motornet/commit/d5aee7db8e0de3cec95bf8744c499c2ff6019c0c
    label: Patch Commit
  - url: >-
      https://www.vulncheck.com/advisories/motor-net-denial-of-service-via-jsonnet-deserialization
    label: >-
      VulnCheck Advisory: Motor.NET < 0.19.0 Denial of Service via JsonNet
      Deserialization
tags:
  - cve.org
ingestedAt: '2026-10-22T22:00:50.412Z'
---

## Overview

Motor.NET before 0.19.0 contains an uncaught exception vulnerability in JsonNetDeserializer.Deserialize that allows a remote attacker who can publish to a consumed queue or topic to crash the service permanently by sending structurally valid JSON that does not match the handler's expected type. Attackers can exploit the fact that JsonSerializationException is not caught alongside JsonReaderException and InvalidCastException, causing TypedConsumerService.SingleMessageConsumeAsync to treat the error as CriticalFailure and call StopApplication, which combined with the unacknowledged message being redelivered on restart results in a permanent crash-loop.

## Affected

- `motornet < 0.19.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.