Medium
Security advisory
A arbitrary code execution flaw was found in the Fabric 8 Kubernetes client affecting versions 5.0.0-beta-1 and above. Due to an improperly configured YAML parsing, this will allow a local and privileged attacker to supply malicious YAML.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-4178
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 08:50 UTC · Revision 1
Source evidence
A arbitrary code execution flaw was found in the Fabric 8 Kubernetes client affecting versions 5.0.0-beta-1 and above. Due to an improperly configured YAML parsing, this will allow a local and privileged attacker to supply malicious YAML.
osv:CVE-2021-4178
Complete source record
{
"id": "1dae15e727a63c08cdb196567b6ba215f8c285c9a557959598381a378143edb8",
"url": "https://osv.dev/vulnerability/CVE-2021-4178",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-4178",
"summary": "A arbitrary code execution flaw was found in the Fabric 8 Kubernetes client affecting versions 5.0.0-beta-1 and above. Due to an improperly configured YAML parsing, this will allow a local and privileged attacker to supply malicious YAML.",
"evidence": "osv:CVE-2021-4178",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2021-4178",
"aliases": [
"CVE-2021-4178",
"GHSA-98g7-rxmf-rrxm"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/fabric8io/kubernetes-client",
"type": "GIT",
"events": [
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{
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{
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{
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{
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{
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{
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{
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{
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{
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],
"database_specific": {
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{
"cpe": "cpe:2.3:a:redhat:fabric8-kubernetes:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.0.1"
},
{
"fixed": "5.0.3"
}
],
"source": "CPE_RANGE"
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{
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"range": [
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{
"fixed": "5.1.2"
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],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:redhat:fabric8-kubernetes:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.2.0"
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{
"fixed": "5.3.2"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:redhat:fabric8-kubernetes:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.0"
},
{
"fixed": "5.7.4"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:redhat:fabric8-kubernetes:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.9.0"
},
{
"fixed": "5.10.2"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:redhat:fabric8-kubernetes:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.11.0"
},
{
"fixed": "5.11.2"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:redhat:fabric8-kubernetes:5.8.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.8.0"
},
{
"last_affected": "5.8.0"
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],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"5.8.0",
"v5.10.1",
"v5.11.1",
"v5.8.0",
"v5.7.3",
"v5.3.1",
"v5.1.1",
"v5.0.2",
"v5.11.0",
"v5.10.0",
"v5.9.0",
"v5.7.2",
"v5.7.1",
"v5.7.0",
"v5.6.0",
"v5.5.0",
"v5.3.0",
"v5.2.1",
"v5.2.0",
"v5.1.0",
"v5.0.1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-4178.json"
}
}
],
"modified": "2026-10-24T10:50:26.356186046Z",
"provider": "osv",
"references": [
"https://access.redhat.com/security/cve/CVE-2021-4178",
"https://github.com/advisories/GHSA-98g7-rxmf-rrxm",
"https://bugzilla.redhat.com/show_bug.cgi?id=2034388",
"https://github.com/fabric8io/kubernetes-client/issues/3653"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:redhat:a-mq_streams:2.0.1:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:a-mq_streams",
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{
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"extracted_events": [
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},
{
"cpes": [
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"vendor_product": "redhat:descision_manager",
"extracted_events": [
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},
{
"cpes": [
"cpe:2.3:a:redhat:fabric8-kubernetes:5.0.0:beta1:*:*:*:*:*:*"
],
"vendor_product": "redhat:fabric8-kubernetes",
"extracted_events": [
{
"range": [
{
"introduced": "5.0.0-beta1"
},
{
"last_affected": "5.0.0-beta1"
}
],
"source": "CPE_STRING"
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]
},
{
"cpes": [
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"vendor_product": "redhat:fuse",
"extracted_events": [
{
"range": [
{
"introduced": "7.11"
},
{
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}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:redhat:integration_camel_quarkus:2.2.1:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:integration_camel_quarkus",
"extracted_events": [
{
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{
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},
{
"cpes": [
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],
"vendor_product": "redhat:process_automation",
"extracted_events": [
{
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{
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},
{
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],
"source": "CPE_STRING"
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]
}
},
"related_cves": [
{
"value": "CVE-2021-4178",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 442180,
"published_at": "2022-08-24T16:15:09.77+00:00"
}