Motor.NET < 0.19.0 Kafka Denial of Service via Structured CloudEvent Mapping
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-112331
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 5 Nov 2026, 04:09 UTC · Revision 1
Source evidence
Motor.NET < 0.19.0 Kafka Denial of Service via Structured CloudEvent Mapping
core-osv · Original sourcePublished 22 Oct 2026, 19:41 UTC
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.
osv:CVE-2026-112331
Complete source record
{
"id": "5ee1063c6054b439e0e2455d6508866d14156f93e5cacb8ea4639e1055c02845",
"url": "https://osv.dev/vulnerability/CVE-2026-112331",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Motor.NET < 0.19.0 Kafka Denial of Service via Structured CloudEvent Mapping",
"summary": "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.",
"evidence": "osv:CVE-2026-112331",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-112331",
"aliases": [
"CVE-2026-112331"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/gdatasoftwareag/motornet",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "c2eaa0e9ac17b28c1f7b044825c7d60e57a5600e"
},
{
"fixed": "b4b6979f5dd7447dd02312e27d766ae2e9d050c2"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "0.19.0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"fixed": "c2eaa0e9ac17b28c1f7b044825c7d60e57a5600e"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v0.19.0"
},
{
"range": [
{
"fixed": "b4b6979f5dd7447dd02312e27d766ae2e9d050c2"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"v0.19.0-pre2",
"v0.19.0-pre1",
"v0.18.2",
"v0.18.1",
"v0.18.0",
"v0.17.0",
"v0.16.1",
"v0.15.1",
"v0.15.0",
"v0.14.0",
"v0.14.0-rc1",
"v0.13.2",
"v0.13.1",
"v0.13.0",
"v0.12.0",
"v0.11.1",
"v0.11.0",
"v0.10.6",
"v0.10.4",
"v0.10.3",
"v0.10.2",
"v0.10.1",
"v0.10.0",
"v0.9.11",
"v0.9.10",
"v0.9.9",
"v0.9.8",
"v0.9.7",
"v0.9.6",
"v0.9.5",
"v0.9.4",
"v0.9.3",
"v0.9.2",
"V0.9.1",
"v0.9.0",
"v0.8.2",
"v0.8.1",
"v0.8.0",
"v0.7.4",
"v0.7.3",
"v0.7.2",
"v0.7.1",
"v0.7.0",
"v0.6.14",
"v0.6.13",
"v0.6.12",
"v0.6.11",
"v0.6.10",
"v0.6.9",
"v0.6.8",
"v0.6",
"v0.6.7",
"v0.6.6",
"v0.6.5",
"v0.6.4",
"v0.6.3",
"v0.6.2",
"v0.6.1",
"v0.6.0",
"v0.5.4",
"v0.5.3",
"v0.5.2",
"v0.5.1",
"v0.5.0",
"v0.4.0",
"v0.3.0",
"v0.2.0",
"v0.1.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-112331.json"
}
}
],
"modified": "2026-10-28T02:30:42.204190366Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112331.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-112331",
"https://www.vulncheck.com/advisories/motor-net-kafka-denial-of-service-via-cloudevents-handler",
"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://github.com/GDATASoftwareAG/motornet"
],
"provider_metadata": {
"cwe_ids": [
"CWE-755"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112331.json"
}
},
"related_cves": [
{
"value": "CVE-2026-112331",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 510095,
"published_at": "2026-10-22T19:41:15.973+00:00"
}