Medium
docker-buildx — security advisory
Docker Buildx Bake does not request the expected fs.read approval for certain filesystem inputs. An untrusted Bake definition can expose a readable file through a pathless secret whose ID is interpreted as a client-side pathname, or consume a local OCI image layout outside the project after entitlement validation checks a different path representation. Users who run untrusted Bake definitions are affected.
- Products
- docker-buildx
- Affected versions
- 0.11.2-0ubuntu1~20.04.1, 0.11.2-0ubuntu1~20.04.2, 0.11.2-0ubuntu1~22.04.1, 0.11.2-0ubuntu1~22.04.2, 0.11.2-0ubuntu2, 0.12.1-0ubuntu1, 0.12.1-0ubuntu1~20.04.1, 0.12.1-0ubuntu1~20.04.2, 0.12.1-0ubuntu1~22.04.1, 0.12.1-0ubuntu1~22.04.2, 0.12.1-0ubuntu2, 0.12.1-0ubuntu2.1, 0.12.1-0ubuntu2.2, 0.14.1-0ubuntu1~20.04.1, 0.14.1-0ubuntu1~22.04.1, 0.14.1-0ubuntu1~24.04.1, 0.20.1-0ubuntu1~22.04.1, 0.20.1-0ubuntu1~22.04.2, 0.20.1-0ubuntu1~24.04.1, 0.20.1-0ubuntu1~24.04.2, 0.21.3-0ubuntu1, 0.21.3-0ubuntu1~22.04.1, 0.21.3-0ubuntu1~24.04.1, 0.30.1-0ubuntu1, 0.30.1-0ubuntu1~22.04.1, 0.30.1-0ubuntu1~24.04.1, 0.36.1-0ubuntu1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-103433
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:58 UTC · Revision 1
Source evidence
Docker Buildx Bake does not request the expected fs.read approval for certain filesystem inputs. An untrusted Bake definition can expose a readable file through a pathless secret whose ID is interpreted as a client-side pathname, or consume a local OCI image layout outside the project after entitlement validation checks a different path representation. Users who run untrusted Bake definitions are affected.
osv:UBUNTU-CVE-2026-103433
docker-buildx
Fixed versions: Not specified
docker-buildx
Fixed versions: Not specified
docker-buildx
Fixed versions: Not specified
docker-buildx
Fixed versions: Not specified
docker-buildx
Fixed versions: Not specified
Complete source record
{
"id": "c38a93bf10af68a94d0f5b42547623432fb74ddb1c73035f162543b5baa98a1b",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-103433",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-103433",
"summary": "Docker Buildx Bake does not request the expected fs.read approval for certain filesystem inputs. An untrusted Bake definition can expose a readable file through a pathless secret whose ID is interpreted as a client-side pathname, or consume a local OCI image layout outside the project after entitlement validation checks a different path representation. Users who run untrusted Bake definitions are affected.",
"evidence": "osv:UBUNTU-CVE-2026-103433",
"products": [
{
"name": {
"value": "docker-buildx",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.11.2-0ubuntu1~20.04.1",
"evidence": "/affected/0/versions"
},
{
"value": "0.11.2-0ubuntu1~20.04.2",
"evidence": "/affected/0/versions"
},
{
"value": "0.12.1-0ubuntu1~20.04.1",
"evidence": "/affected/0/versions"
},
{
"value": "0.12.1-0ubuntu1~20.04.2",
"evidence": "/affected/0/versions"
},
{
"value": "0.14.1-0ubuntu1~20.04.1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "docker-buildx",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.11.2-0ubuntu1~22.04.1",
"evidence": "/affected/1/versions"
},
{
"value": "0.11.2-0ubuntu1~22.04.2",
"evidence": "/affected/1/versions"
},
{
"value": "0.12.1-0ubuntu1~22.04.1",
"evidence": "/affected/1/versions"
},
{
"value": "0.12.1-0ubuntu1~22.04.2",
"evidence": "/affected/1/versions"
},
{
"value": "0.14.1-0ubuntu1~22.04.1",
"evidence": "/affected/1/versions"
},
{
"value": "0.20.1-0ubuntu1~22.04.1",
"evidence": "/affected/1/versions"
},
{
"value": "0.20.1-0ubuntu1~22.04.2",
"evidence": "/affected/1/versions"
},
{
"value": "0.21.3-0ubuntu1~22.04.1",
"evidence": "/affected/1/versions"
},
{
"value": "0.30.1-0ubuntu1~22.04.1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "docker-buildx",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.11.2-0ubuntu2",
"evidence": "/affected/2/versions"
},
{
"value": "0.12.1-0ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "0.12.1-0ubuntu2",
"evidence": "/affected/2/versions"
},
{
"value": "0.12.1-0ubuntu2.1",
"evidence": "/affected/2/versions"
},
{
"value": "0.12.1-0ubuntu2.2",
"evidence": "/affected/2/versions"
},
{
"value": "0.14.1-0ubuntu1~24.04.1",
"evidence": "/affected/2/versions"
},
{
"value": "0.20.1-0ubuntu1~24.04.1",
"evidence": "/affected/2/versions"
},
{
"value": "0.20.1-0ubuntu1~24.04.2",
"evidence": "/affected/2/versions"
},
{
"value": "0.21.3-0ubuntu1~24.04.1",
"evidence": "/affected/2/versions"
},
{
"value": "0.30.1-0ubuntu1~24.04.1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "docker-buildx",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.30.1-0ubuntu1",
"evidence": "/affected/3/versions"
},
{
"value": "0.36.1-0ubuntu1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "docker-buildx",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.21.3-0ubuntu1",
"evidence": "/affected/4/versions"
},
{
"value": "0.30.1-0ubuntu1",
"evidence": "/affected/4/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "UBUNTU-CVE-2026-103433",
"aliases": [
"UBUNTU-CVE-2026-103433"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "docker-buildx",
"purl": "pkg:deb/ubuntu/docker-buildx?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"0.11.2-0ubuntu1~20.04.1",
"0.11.2-0ubuntu1~20.04.2",
"0.12.1-0ubuntu1~20.04.1",
"0.12.1-0ubuntu1~20.04.2",
"0.14.1-0ubuntu1~20.04.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-103433.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "docker-buildx",
"binary_version": "0.14.1-0ubuntu1~20.04.1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "docker-buildx",
"purl": "pkg:deb/ubuntu/docker-buildx?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"0.11.2-0ubuntu1~22.04.1",
"0.11.2-0ubuntu1~22.04.2",
"0.12.1-0ubuntu1~22.04.1",
"0.12.1-0ubuntu1~22.04.2",
"0.14.1-0ubuntu1~22.04.1",
"0.20.1-0ubuntu1~22.04.1",
"0.20.1-0ubuntu1~22.04.2",
"0.21.3-0ubuntu1~22.04.1",
"0.30.1-0ubuntu1~22.04.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-103433.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "docker-buildx",
"binary_version": "0.30.1-0ubuntu1~22.04.1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "docker-buildx",
"purl": "pkg:deb/ubuntu/docker-buildx?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"0.11.2-0ubuntu2",
"0.12.1-0ubuntu1",
"0.12.1-0ubuntu2",
"0.12.1-0ubuntu2.1",
"0.12.1-0ubuntu2.2",
"0.14.1-0ubuntu1~24.04.1",
"0.20.1-0ubuntu1~24.04.1",
"0.20.1-0ubuntu1~24.04.2",
"0.21.3-0ubuntu1~24.04.1",
"0.30.1-0ubuntu1~24.04.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-103433.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "docker-buildx",
"binary_version": "0.30.1-0ubuntu1~24.04.1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "docker-buildx",
"purl": "pkg:deb/ubuntu/docker-buildx?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"0.30.1-0ubuntu1",
"0.36.1-0ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-103433.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "docker-buildx",
"binary_version": "0.36.1-0ubuntu1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "docker-buildx",
"purl": "pkg:deb/ubuntu/docker-buildx?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"0.21.3-0ubuntu1",
"0.30.1-0ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-103433.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "docker-buildx",
"binary_version": "0.30.1-0ubuntu1"
}
]
}
}
],
"modified": "2026-10-17T12:57:59.036228115Z",
"provider": "osv",
"upstream": [
"CVE-2026-103433"
],
"references": [
"https://ubuntu.com/security/CVE-2026-103433",
"https://www.cve.org/CVERecord?id=CVE-2026-103433",
"https://github.com/docker/buildx/security/advisories/GHSA-p54p-jq4x-rc28",
"https://docs.docker.com/build/bake/reference/#targetentitlements",
"https://github.com/docker/buildx",
"https://github.com/docker/buildx/releases/tag/v0.37.2"
]
},
"related_cves": [
{
"value": "CVE-2026-103433",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 357812,
"published_at": "2026-10-05T22:16:00+00:00"
}