HighFix available
Red Hat Security Advisory: Red Hat build of MicroShift 4.21.36 security update
Type: advisorySources: OSV
- Products
- microshift, microshift-ai-model-serving, microshift-ai-model-serving-release-info, microshift-cert-manager, microshift-cert-manager-release-info, microshift-gateway-api, microshift-gateway-api-release-info, microshift-greenboot, microshift-low-latency, microshift-multus, microshift-multus-release-info, microshift-networking, microshift-observability, microshift-olm, microshift-olm-release-info, microshift-release-info, microshift-selinux, microshift-sriov, microshift-sriov-release-info
- Affected versions
- Not specified
- Fixed versions
- 0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9
- CVEs
- CVE-2026-33818, CVE-2026-42504, CVE-2026-56858, CVE-2026-56860, CVE-2026-56862
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 09:30 UTC · Revision 1
Source evidence
Red Hat Security Advisory: Red Hat build of MicroShift 4.21.36 security update
core-osv · Original sourcePublished 7 Oct 2026, 10:19 UTC
Red Hat Security Advisory: Red Hat build of MicroShift 4.21.36 security update
osv:RHSA-2026:74796
microshift
Fixed versions: 0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9
microshift-ai-model-serving
Fixed versions: 0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9
microshift-ai-model-serving-release-info
Fixed versions: 0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9
microshift-cert-manager
Fixed versions: 0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9
microshift-cert-manager-release-info
Fixed versions: 0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9
microshift-gateway-api
Fixed versions: 0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9
microshift-gateway-api-release-info
Fixed versions: 0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9
microshift-greenboot
Fixed versions: 0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9
microshift-low-latency
Fixed versions: 0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9
microshift-multus
Fixed versions: 0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9
microshift-multus-release-info
Fixed versions: 0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9
microshift-networking
Fixed versions: 0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9
microshift-observability
Fixed versions: 0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9
microshift-olm
Fixed versions: 0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9
microshift-olm-release-info
Fixed versions: 0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9
microshift-release-info
Fixed versions: 0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9
microshift-selinux
Fixed versions: 0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9
microshift-sriov
Fixed versions: 0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9
microshift-sriov-release-info
Fixed versions: 0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9
Complete source record
{
"id": "0694e86d664699134ccc9c758a0b6c3182db799901e14a3235b71210b93eeb51",
"url": "https://osv.dev/vulnerability/RHSA-2026%3A74796",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Red Hat Security Advisory: Red Hat build of MicroShift 4.21.36 security update",
"summary": "Red Hat Security Advisory: Red Hat build of MicroShift 4.21.36 security update",
"evidence": "osv:RHSA-2026:74796",
"products": [
{
"name": {
"value": "microshift",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "microshift-ai-model-serving",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "microshift-ai-model-serving-release-info",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "microshift-cert-manager",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "microshift-cert-manager-release-info",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "microshift-gateway-api",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "microshift-gateway-api-release-info",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9",
"evidence": "/affected/6/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "microshift-greenboot",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9",
"evidence": "/affected/7/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "microshift-low-latency",
"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9",
"evidence": "/affected/8/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "microshift-multus",
"evidence": "/affected/9/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9",
"evidence": "/affected/9/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "microshift-multus-release-info",
"evidence": "/affected/10/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9",
"evidence": "/affected/10/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "microshift-networking",
"evidence": "/affected/11/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9",
"evidence": "/affected/11/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "microshift-observability",
"evidence": "/affected/12/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9",
"evidence": "/affected/12/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "microshift-olm",
"evidence": "/affected/13/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9",
"evidence": "/affected/13/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "microshift-olm-release-info",
"evidence": "/affected/14/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9",
"evidence": "/affected/14/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "microshift-release-info",
"evidence": "/affected/15/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9",
"evidence": "/affected/15/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "microshift-selinux",
"evidence": "/affected/16/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9",
"evidence": "/affected/16/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "microshift-sriov",
"evidence": "/affected/17/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9",
"evidence": "/affected/17/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "microshift-sriov-release-info",
"evidence": "/affected/18/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9",
"evidence": "/affected/18/ranges"
}
],
"affected_versions": []
}
],
"severity": "high",
"structured": {
"id": "RHSA-2026:74796",
"aliases": [
"RHSA-2026:74796"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9"
}
]
}
],
"package": {
"name": "microshift",
"purl": "pkg:rpm/redhat/microshift",
"ecosystem": "Red Hat:openshift:4.21::el9"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:74796.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
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},
{
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}
]
}
],
"package": {
"name": "microshift-ai-model-serving",
"purl": "pkg:rpm/redhat/microshift-ai-model-serving",
"ecosystem": "Red Hat:openshift:4.21::el9"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:74796.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
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{
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}
]
}
],
"package": {
"name": "microshift-ai-model-serving-release-info",
"purl": "pkg:rpm/redhat/microshift-ai-model-serving-release-info",
"ecosystem": "Red Hat:openshift:4.21::el9"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:74796.json"
}
},
{
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}
]
}
],
"package": {
"name": "microshift-cert-manager",
"purl": "pkg:rpm/redhat/microshift-cert-manager",
"ecosystem": "Red Hat:openshift:4.21::el9"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:74796.json"
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{
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],
"package": {
"name": "microshift-cert-manager-release-info",
"purl": "pkg:rpm/redhat/microshift-cert-manager-release-info",
"ecosystem": "Red Hat:openshift:4.21::el9"
},
"database_specific": {
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},
{
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]
}
],
"package": {
"name": "microshift-gateway-api",
"purl": "pkg:rpm/redhat/microshift-gateway-api",
"ecosystem": "Red Hat:openshift:4.21::el9"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:74796.json"
}
},
{
"ranges": [
{
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}
]
}
],
"package": {
"name": "microshift-gateway-api-release-info",
"purl": "pkg:rpm/redhat/microshift-gateway-api-release-info",
"ecosystem": "Red Hat:openshift:4.21::el9"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:74796.json"
}
},
{
"ranges": [
{
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"events": [
{
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{
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}
]
}
],
"package": {
"name": "microshift-greenboot",
"purl": "pkg:rpm/redhat/microshift-greenboot",
"ecosystem": "Red Hat:openshift:4.21::el9"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:74796.json"
}
},
{
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}
]
}
],
"package": {
"name": "microshift-low-latency",
"purl": "pkg:rpm/redhat/microshift-low-latency",
"ecosystem": "Red Hat:openshift:4.21::el9"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:74796.json"
}
},
{
"ranges": [
{
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{
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}
]
}
],
"package": {
"name": "microshift-multus",
"purl": "pkg:rpm/redhat/microshift-multus",
"ecosystem": "Red Hat:openshift:4.21::el9"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:74796.json"
}
},
{
"ranges": [
{
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{
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}
]
}
],
"package": {
"name": "microshift-multus-release-info",
"purl": "pkg:rpm/redhat/microshift-multus-release-info",
"ecosystem": "Red Hat:openshift:4.21::el9"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:74796.json"
}
},
{
"ranges": [
{
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"events": [
{
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{
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}
]
}
],
"package": {
"name": "microshift-networking",
"purl": "pkg:rpm/redhat/microshift-networking",
"ecosystem": "Red Hat:openshift:4.21::el9"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:74796.json"
}
},
{
"ranges": [
{
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{
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}
]
}
],
"package": {
"name": "microshift-observability",
"purl": "pkg:rpm/redhat/microshift-observability",
"ecosystem": "Red Hat:openshift:4.21::el9"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:74796.json"
}
},
{
"ranges": [
{
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"events": [
{
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]
}
],
"package": {
"name": "microshift-olm",
"purl": "pkg:rpm/redhat/microshift-olm",
"ecosystem": "Red Hat:openshift:4.21::el9"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:74796.json"
}
},
{
"ranges": [
{
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{
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{
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}
]
}
],
"package": {
"name": "microshift-olm-release-info",
"purl": "pkg:rpm/redhat/microshift-olm-release-info",
"ecosystem": "Red Hat:openshift:4.21::el9"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:74796.json"
}
},
{
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{
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{
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}
]
}
],
"package": {
"name": "microshift-release-info",
"purl": "pkg:rpm/redhat/microshift-release-info",
"ecosystem": "Red Hat:openshift:4.21::el9"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:74796.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9"
}
]
}
],
"package": {
"name": "microshift-selinux",
"purl": "pkg:rpm/redhat/microshift-selinux",
"ecosystem": "Red Hat:openshift:4.21::el9"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:74796.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9"
}
]
}
],
"package": {
"name": "microshift-sriov",
"purl": "pkg:rpm/redhat/microshift-sriov",
"ecosystem": "Red Hat:openshift:4.21::el9"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:74796.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0:4.21.36-202610012325.p0.g5f30446.assembly.4.21.36.el9"
}
]
}
],
"package": {
"name": "microshift-sriov-release-info",
"purl": "pkg:rpm/redhat/microshift-sriov-release-info",
"ecosystem": "Red Hat:openshift:4.21::el9"
},
"database_specific": {
"source": "https://security.access.redhat.com/data/osv/RHSA-2026:74796.json"
}
}
],
"modified": "2026-10-20T10:15:42Z",
"provider": "osv",
"upstream": [
"CVE-2026-33818",
"CVE-2026-42504",
"CVE-2026-56858",
"CVE-2026-56860",
"CVE-2026-56862"
],
"references": [
"https://access.redhat.com/errata/RHSA-2026:74796",
"https://access.redhat.com/security/updates/classification/#important",
"https://bugzilla.redhat.com/show_bug.cgi?id=2484204",
"https://bugzilla.redhat.com/show_bug.cgi?id=2515815",
"https://bugzilla.redhat.com/show_bug.cgi?id=2515820",
"https://bugzilla.redhat.com/show_bug.cgi?id=2515838",
"https://bugzilla.redhat.com/show_bug.cgi?id=2515839",
"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_74796.json",
"https://access.redhat.com/security/cve/CVE-2026-33818",
"https://www.cve.org/CVERecord?id=CVE-2026-33818",
"https://nvd.nist.gov/vuln/detail/CVE-2026-33818",
"https://go.dev/cl/814980",
"https://go.dev/issue/80405",
"https://groups.google.com/g/golang-announce/c/94pEornpRlI",
"https://pkg.go.dev/vuln/GO-2026-5972",
"https://access.redhat.com/security/cve/CVE-2026-42504",
"https://www.cve.org/CVERecord?id=CVE-2026-42504",
"https://nvd.nist.gov/vuln/detail/CVE-2026-42504",
"https://go.dev/cl/774481",
"https://go.dev/issue/79217",
"https://groups.google.com/g/golang-announce/c/tKs3rmcBcKw",
"https://pkg.go.dev/vuln/GO-2026-5038",
"https://access.redhat.com/security/cve/CVE-2026-56858",
"https://www.cve.org/CVERecord?id=CVE-2026-56858",
"https://nvd.nist.gov/vuln/detail/CVE-2026-56858",
"https://go.dev/cl/807100",
"https://go.dev/issue/80435",
"https://pkg.go.dev/vuln/GO-2026-6091",
"https://access.redhat.com/security/cve/CVE-2026-56860",
"https://www.cve.org/CVERecord?id=CVE-2026-56860",
"https://nvd.nist.gov/vuln/detail/CVE-2026-56860",
"https://go.dev/cl/803681",
"https://go.dev/issue/80494",
"https://pkg.go.dev/vuln/GO-2026-6218",
"https://access.redhat.com/security/cve/CVE-2026-56862",
"https://www.cve.org/CVERecord?id=CVE-2026-56862",
"https://nvd.nist.gov/vuln/detail/CVE-2026-56862",
"https://go.dev/cl/804261",
"https://go.dev/issue/80528",
"https://pkg.go.dev/vuln/GO-2026-6090"
]
},
"related_cves": [
{
"value": "CVE-2026-33818",
"evidence": "/upstream"
},
{
"value": "CVE-2026-42504",
"evidence": "/upstream"
},
{
"value": "CVE-2026-56858",
"evidence": "/upstream"
},
{
"value": "CVE-2026-56860",
"evidence": "/upstream"
},
{
"value": "CVE-2026-56862",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 378897,
"published_at": "2026-10-07T10:19:49+00:00"
}