kubernetes — security advisory
Users may be able to launch containers that bypass the mountable secrets policy enforced by the ServiceAccount admission plugin when using ephemeral containers. The policy ensures pods running with a service account may only reference secrets specified in the service account’s secrets field. Kubernetes clusters are only affected if the ServiceAccount admission plugin and the `kubernetes.io/enforce-mountable-secrets` annotation are used together with ephemeral containers.
- Products
- kubernetes
- Affected versions
- Not specified
- Fixed versions
- 1.20.5+really1.20.2-1
- CVEs
- CVE-2023-2728
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 15:40 UTC · Revision 1
Source evidence
Users may be able to launch containers that bypass the mountable secrets policy enforced by the ServiceAccount admission plugin when using ephemeral containers. The policy ensures pods running with a service account may only reference secrets specified in the service account’s secrets field. Kubernetes clusters are only affected if the ServiceAccount admission plugin and the `kubernetes.io/enforce-mountable-secrets` annotation are used together with ephemeral containers.
osv:DEBIAN-CVE-2023-2728
kubernetes
Fixed versions: 1.20.5+really1.20.2-1
kubernetes
Fixed versions: 1.20.5+really1.20.2-1
kubernetes
Fixed versions: 1.20.5+really1.20.2-1
Complete source record
{
"id": "9769dea6a839103c7cc32f374eb4a734290ab97fa1d7193c2da5df5d6897ea53",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2023-2728",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2023-2728",
"summary": "Users may be able to launch containers that bypass the mountable secrets policy enforced by the ServiceAccount admission plugin when using ephemeral containers. The policy ensures pods running with a service account may only reference secrets specified in the service account’s secrets field. Kubernetes clusters are only affected if the ServiceAccount admission plugin and the `kubernetes.io/enforce-mountable-secrets` annotation are used together with ephemeral containers.",
"evidence": "osv:DEBIAN-CVE-2023-2728",
"products": [
{
"name": {
"value": "kubernetes",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.20.5+really1.20.2-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "kubernetes",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.20.5+really1.20.2-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "kubernetes",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.20.5+really1.20.2-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2023-2728",
"aliases": [
"DEBIAN-CVE-2023-2728"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.20.5+really1.20.2-1"
}
]
}
],
"package": {
"name": "kubernetes",
"purl": "pkg:deb/debian/kubernetes?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-2728.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.20.5+really1.20.2-1"
}
]
}
],
"package": {
"name": "kubernetes",
"purl": "pkg:deb/debian/kubernetes?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-2728.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.20.5+really1.20.2-1"
}
]
}
],
"package": {
"name": "kubernetes",
"purl": "pkg:deb/debian/kubernetes?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-2728.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-26T18:01:22.215191683Z",
"provider": "osv",
"upstream": [
"CVE-2023-2728"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2023-2728"
]
},
"related_cves": [
{
"value": "CVE-2023-2728",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 455481,
"published_at": "2023-07-03T21:15:09.557+00:00"
}