Fission Environment CRD podspec passthrough enables hostPID/hostNetwork/privileged pods, node escape
Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.24.0, Fission's Environment CRD exposes spec.runtime.podSpec and spec.builder.podSpec, which are merged into the Kubernetes pod specs for runtime and builder pods. The merge logic propagated hostNetwork, hostPID, hostIPC, container privileged, and serviceAccountName from the user-supplied podspec with no filtering, and Environment.Validate performed no security-relevant checks on these fields. This issue has been patched in version 1.24.0.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-50564
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 8 Nov 2026, 03:27 UTC · Revision 1
Source evidence
Fission Environment CRD podspec passthrough enables hostPID/hostNetwork/privileged pods, node escape
core-osv · Original sourcePublished 10 Jun 2026, 17:27 UTC
Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.24.0, Fission's Environment CRD exposes spec.runtime.podSpec and spec.builder.podSpec, which are merged into the Kubernetes pod specs for runtime and builder pods. The merge logic propagated hostNetwork, hostPID, hostIPC, container privileged, and serviceAccountName from the user-supplied podspec with no filtering, and Environment.Validate performed no security-relevant checks on these fields. This issue has been patched in version 1.24.0.
osv:CVE-2026-50564
Complete source record
{
"id": "bf2547a3a73be111bb9b94819a1e55f0f9c4c348c8deac5e6cfdbb61d33c945a",
"url": "https://osv.dev/vulnerability/CVE-2026-50564",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Fission Environment CRD podspec passthrough enables hostPID/hostNetwork/privileged pods, node escape",
"summary": "Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.24.0, Fission's Environment CRD exposes spec.runtime.podSpec and spec.builder.podSpec, which are merged into the Kubernetes pod specs for runtime and builder pods. The merge logic propagated hostNetwork, hostPID, hostIPC, container privileged, and serviceAccountName from the user-supplied podspec with no filtering, and Environment.Validate performed no security-relevant checks on these fields. This issue has been patched in version 1.24.0.",
"evidence": "osv:CVE-2026-50564",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2026-50564",
"aliases": [
"CVE-2026-50564",
"GHSA-gx55-f84r-v3r7",
"GO-2026-5855"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/fission/fission",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "ce617120c41b9e4a51d577f81b441238264e88fd"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "1.24.0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "ce617120c41b9e4a51d577f81b441238264e88fd"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v1.24.0"
},
{
"range": [
{
"introduced": "0"
},
{
"fixed": "1.24.0"
}
],
"source": "DESCRIPTION"
}
]
}
}
],
"versions": [
"v1.23.0-rc1",
"v1.23.0",
"v1.22.0",
"v1.22.0-rc2",
"v1.22.0-rc1",
"v1.21.0",
"v1.21.0-rc2",
"v1.21.0-rc1",
"v1.20.5",
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"v1.20.0-rc1",
"v1.19.0",
"v1.19.0-rc2",
"v1.19.0-rc1",
"v1.18.0",
"v1.18.0-rc2",
"v1.18.0-rc1",
"v1.17.0",
"v1.17.0-rc2",
"v1.16.0",
"v1.17.0-rc1",
"v1.16.0-rc2",
"v1.16.0-rc1",
"v1.15.1",
"v1.15.0",
"v1.15.0-rc2",
"v1.15.0-rc1",
"v1.14.1",
"1.14.1",
"v1.14.0",
"1.14.0",
"v1.13.1",
"1.13.1",
"v1.13.0",
"1.13.0",
"v1.8.0",
"1.8.0",
"v1.7.1",
"1.7.1",
"v1.7.0",
"1.7.0",
"v1.7.0-rc.2",
"1.7.0-rc.2",
"v1.7.0-rc.1",
"1.7.0-rc.1",
"v1.6.0",
"1.6.0",
"1.3.0",
"1.0-rc1",
"0.10.0",
"0.7.2",
"0.6.1",
"latest",
"0.6.0",
"0.4.1",
"0.4.0",
"0.4.0rc",
"0.3.0",
"0.3.0-rc",
"v0.2.1",
"v0.2.0-20170901",
"nightly20170705",
"nightly20170621",
"alpha20170124",
"kubecon"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-50564.json"
}
}
],
"modified": "2026-10-28T02:30:53.155770978Z",
"provider": "osv",
"references": [
"https://github.com/fission/fission/releases/tag/v1.24.0",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50564.json",
"https://github.com/fission/fission/security/advisories/GHSA-gx55-f84r-v3r7",
"https://nvd.nist.gov/vuln/detail/CVE-2026-50564",
"https://github.com/fission/fission/pull/3391"
],
"provider_metadata": {
"cwe_ids": [
"CWE-269",
"CWE-284",
"CWE-693"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50564.json"
}
},
"related_cves": [
{
"value": "CVE-2026-50564",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 522203,
"published_at": "2026-06-10T17:27:34.232+00:00"
}