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4 vulnerabilities found for Docker Sandboxes by Docker
CVE-2026-17106 (GCVE-0-2026-17106)
Vulnerability from cvelistv5
Published
2026-08-18 18:35
Modified
2026-08-19 03:56
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Summary
The tar extraction routines in moby/go-archive (Unpack, UnpackLayer, Untar/UntarUncompressed, and the ApplyLayer helpers) do not confine filesystem operations to the destination directory. The extractor decides where each archive entry lands using lexical string checks and then performs the filesystem operation on a path that is resolved by the OS, so links introduced by the archive can be followed out of the destination directory. An attacker who controls the contents of an archive can create or overwrite files at arbitrary paths writable by the extracting process.
References
| URL | Tags | |
|---|---|---|
|
|
||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| moby | go-archive |
Version: 0 ≤ |
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|
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}
CVE-2026-18171 (GCVE-0-2026-18171)
Vulnerability from cvelistv5
Published
2026-08-12 14:47
Modified
2026-08-12 17:02
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-863 - Incorrect Authorization
Summary
Docker Sandboxes (sbx) applies the read-only intent of a runtime host mount to the in-guest container bind only: the underlying virtio-fs host-edge grant is added to the sandbox's policy-share allowlist with no access mode. The directory stays writable at its shared-export path, so unprivileged code inside the sandbox can derive that path and write to a host directory the operator attached read-only.
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Docker | Docker Sandboxes |
Version: 0.35.0 ≤ 0.38.0 cpe:2.3:a:docker:docker_sandboxes:*:*:*:*:*:*:*:* |
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}
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CVE-2026-12539 (GCVE-0-2026-12539)
Vulnerability from cvelistv5
Published
2026-06-18 13:51
Modified
2026-08-13 13:33
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
Docker Sandboxes (sbx) blocks ICMP egress with an authorizer applied only at network-creation time, and does not re-apply it to networks rebuilt from disk when the Docker daemon restarts, so a restart-surviving sandbox forwards ICMP to arbitrary hosts. A workload inside a sandbox, which the threat model treats as untrusted, can therefore defeat the documented ICMP egress block to perform network reconnaissance and exfiltrate data over an ICMP covert channel, regardless of the configured allowlist.
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Docker | Docker Sandboxes |
Version: 0.14.0 ≤ cpe:2.3:a:docker:docker_sandboxes:*:*:*:*:*:*:*:* |
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"discovery": "INTERNAL"
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CVE-2026-12039 (GCVE-0-2026-12039)
Vulnerability from cvelistv5
Published
2026-06-18 13:48
Modified
2026-08-13 13:33
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-923 - Improper Restriction of Communication Channel to Intended Endpoints
Summary
Docker Sandboxes (sbx) enforces an HTTP/S-only egress allowlist but does not apply it to DNS resolution: the per-network embedded DNS server forwards any queried name to the host resolver whenever the network is internet-connected, without consulting the policy. A workload inside a sandbox, which the threat model treats as untrusted, can therefore encode data into DNS labels for an attacker-controlled domain and exfiltrate it through a DNS covert channel, bypassing the configured allowlist.
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Docker | Docker Sandboxes |
Version: 0.13.0 ≤ cpe:2.3:a:docker:docker_sandboxes:*:*:*:*:*:*:*:* |
{
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},
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}
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"timestamp": "2026-06-18T15:00:00.773890Z",
"version": "2.0.3"
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},
"title": "CISA ADP Vulnrichment"
}
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"Linux",
"Windows"
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"value": "Sophie Lemos"
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}
],
"value": "Docker Sandboxes (sbx) enforces an HTTP/S-only egress allowlist but does not apply it to DNS resolution: the per-network embedded DNS server forwards any queried name to the host resolver whenever the network is internet-connected, without consulting the policy. A workload inside a sandbox, which the threat model treats as untrusted, can therefore encode data into DNS labels for an attacker-controlled domain and exfiltrate it through a DNS covert channel, bypassing the configured allowlist."
}
],
"impacts": [
{
"capecId": "CAPEC-554",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-554 Functionality Bypass"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "LOCAL",
"baseScore": 5.7,
"baseSeverity": "MEDIUM",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-923",
"description": "CWE-923: Improper Restriction of Communication Channel to Intended Endpoints",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-13T13:33:35.581Z",
"orgId": "686469e6-3ff6-451b-ab8b-cf5b9e89401e",
"shortName": "Docker"
},
"references": [
{
"tags": [
"product"
],
"url": "https://docs.docker.com/ai/sandboxes/"
},
{
"tags": [
"release-notes"
],
"url": "https://github.com/docker/sbx-releases/releases/tag/v0.33.0"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Docker Sandboxes network egress allowlist bypass via unfiltered DNS resolution"
}
},
"cveMetadata": {
"assignerOrgId": "686469e6-3ff6-451b-ab8b-cf5b9e89401e",
"assignerShortName": "Docker",
"cveId": "CVE-2026-12039",
"datePublished": "2026-06-18T13:48:14.682Z",
"dateReserved": "2026-06-11T19:23:44.967Z",
"dateUpdated": "2026-08-13T13:33:35.581Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}