ubuntu-cve-2026-34040
Vulnerability from osv_ubuntu
Published
2026-03-31 03:15
Modified
2026-05-20 15:27
Summary
Details
Moby is an open source container framework. Prior to version 29.3.1, a security vulnerability has been detected that allows attackers to bypass authorization plugins (AuthZ). This issue has been patched in version 29.3.1.
Severity
8.8 (High)
7.8 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "docker.io",
"binary_version": "18.09.7-0ubuntu1~16.04.9+esm2"
},
{
"binary_name": "golang-docker-dev",
"binary_version": "18.09.7-0ubuntu1~16.04.9+esm2"
},
{
"binary_name": "golang-github-docker-docker-dev",
"binary_version": "18.09.7-0ubuntu1~16.04.9+esm2"
},
{
"binary_name": "vim-syntax-docker",
"binary_version": "18.09.7-0ubuntu1~16.04.9+esm2"
}
]
},
"package": {
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"purl": "pkg:deb/ubuntu/docker.io@18.09.7-0ubuntu1~16.04.9+esm2?arch=source\u0026distro=esm-infra/xenial"
},
"ranges": [
{
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{
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}
],
"type": "ECOSYSTEM"
}
],
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"1.10.2-0ubuntu3",
"1.10.2-0ubuntu4",
"1.10.3-0ubuntu1",
"1.10.3-0ubuntu4",
"1.10.3-0ubuntu5",
"1.10.3-0ubuntu6",
"1.11.2-0ubuntu5~16.04",
"1.12.1-0ubuntu13~16.04.1",
"1.12.3-0ubuntu4~16.04.2",
"1.12.6-0ubuntu1~16.04.1",
"1.13.1-0ubuntu1~16.04.2",
"17.03.2-0ubuntu2~16.04.1",
"18.06.1-0ubuntu1~16.04.2",
"18.06.1-0ubuntu1.2~16.04.1",
"18.09.2-0ubuntu1~16.04.1",
"18.09.5-0ubuntu1~16.04.2",
"18.09.7-0ubuntu1~16.04.1",
"18.09.7-0ubuntu1~16.04.4",
"18.09.7-0ubuntu1~16.04.5",
"18.09.7-0ubuntu1~16.04.6",
"18.09.7-0ubuntu1~16.04.7",
"18.09.7-0ubuntu1~16.04.9+esm1",
"18.09.7-0ubuntu1~16.04.9+esm2"
]
},
{
"ecosystem_specific": {
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{
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},
{
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},
{
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},
{
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}
]
},
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},
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"17.03.2-0ubuntu3",
"17.03.2-0ubuntu5",
"17.12.1-0ubuntu1",
"18.06.1-0ubuntu1~18.04.1",
"18.06.1-0ubuntu1.2~18.04.1",
"18.09.2-0ubuntu1~18.04.1",
"18.09.5-0ubuntu1~18.04.2",
"18.09.7-0ubuntu1~18.04.1",
"18.09.7-0ubuntu1~18.04.3",
"18.09.7-0ubuntu1~18.04.4",
"19.03.6-0ubuntu1~18.04.1",
"19.03.6-0ubuntu1~18.04.2",
"19.03.6-0ubuntu1~18.04.3",
"20.10.2-0ubuntu1~18.04.2",
"20.10.2-0ubuntu1~18.04.3",
"20.10.7-0ubuntu1~18.04.1",
"20.10.7-0ubuntu1~18.04.2",
"20.10.7-0ubuntu5~18.04.2",
"20.10.7-0ubuntu5~18.04.3",
"20.10.12-0ubuntu2~18.04.1",
"20.10.21-0ubuntu1~18.04.2",
"20.10.21-0ubuntu1~18.04.3",
"20.10.21-0ubuntu1~18.04.3+esm1",
"20.10.21-0ubuntu1~18.04.3+esm2",
"20.10.21-0ubuntu1~18.04.3+esm3"
]
},
{
"ecosystem_specific": {
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{
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},
{
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},
{
"binary_name": "vim-syntax-docker",
"binary_version": "20.10.21-0ubuntu1~20.04.6+esm2"
}
]
},
"package": {
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"name": "docker.io",
"purl": "pkg:deb/ubuntu/docker.io@20.10.21-0ubuntu1~20.04.6+esm2?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
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"19.03.6-0ubuntu1",
"19.03.8-0ubuntu1",
"19.03.8-0ubuntu1.20.04",
"19.03.8-0ubuntu1.20.04.1",
"19.03.8-0ubuntu1.20.04.2",
"20.10.2-0ubuntu1~20.04.2",
"20.10.2-0ubuntu1~20.04.3",
"20.10.7-0ubuntu1~20.04.1",
"20.10.7-0ubuntu1~20.04.2",
"20.10.7-0ubuntu5~20.04.1",
"20.10.7-0ubuntu5~20.04.2",
"20.10.12-0ubuntu2~20.04.1",
"20.10.21-0ubuntu1~20.04.1",
"20.10.21-0ubuntu1~20.04.2",
"20.10.21-0ubuntu1~20.04.4",
"20.10.21-0ubuntu1~20.04.5",
"20.10.21-0ubuntu1~20.04.6",
"20.10.21-0ubuntu1~20.04.6+esm1",
"20.10.21-0ubuntu1~20.04.6+esm2"
]
},
{
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}
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},
"package": {
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"name": "docker.io-app",
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},
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"20.10.25-0ubuntu1~20.04.2",
"24.0.5-0ubuntu1~20.04.1",
"24.0.7-0ubuntu2~20.04.1",
"26.1.3-0ubuntu1~20.04.1",
"26.1.3-0ubuntu1~20.04.1+esm1",
"26.1.3-0ubuntu1~20.04.1+esm2"
]
},
{
"ecosystem_specific": {
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},
{
"binary_name": "golang-github-docker-docker-dev",
"binary_version": "20.10.21-0ubuntu1~22.04.8+esm1"
},
{
"binary_name": "vim-syntax-docker",
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}
]
},
"package": {
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"name": "docker.io",
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},
"ranges": [
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"20.10.7-0ubuntu7",
"20.10.12-0ubuntu1",
"20.10.12-0ubuntu2",
"20.10.12-0ubuntu3",
"20.10.12-0ubuntu3+gke1.24.1",
"20.10.12-0ubuntu4",
"20.10.21-0ubuntu1~22.04.2",
"20.10.21-0ubuntu1~22.04.3",
"20.10.21-0ubuntu1~22.04.5",
"20.10.21-0ubuntu1~22.04.6",
"20.10.21-0ubuntu1~22.04.7",
"20.10.21-0ubuntu1~22.04.7+esm1",
"20.10.21-0ubuntu1~22.04.7+esm2",
"20.10.21-0ubuntu1~22.04.8",
"20.10.21-0ubuntu1~22.04.8+esm1"
]
},
{
"ecosystem_specific": {
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{
"binary_name": "docker.io",
"binary_version": "29.1.3-0ubuntu3~22.04.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:22.04:LTS",
"name": "docker.io-app",
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},
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"24.0.5-0ubuntu1~22.04.1",
"24.0.7-0ubuntu2~22.04.1",
"26.1.3-0ubuntu1~22.04.1",
"26.1.3-0ubuntu1~22.04.1+esm1",
"27.5.1-0ubuntu3~22.04.1",
"27.5.1-0ubuntu3~22.04.2",
"28.2.2-0ubuntu1~22.04.1",
"29.1.3-0ubuntu3~22.04.1",
"29.1.3-0ubuntu3~22.04.2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
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}
]
},
"package": {
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"name": "docker.io",
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},
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"20.10.25+dfsg1-2ubuntu1",
"20.10.25+dfsg1-2ubuntu1+esm1",
"20.10.25+dfsg1-2ubuntu1+esm2",
"20.10.25+dfsg1-2ubuntu1.24.04.1",
"20.10.25+dfsg1-2ubuntu1.24.04.1+esm1"
]
},
{
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"package": {
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"name": "docker.io-app",
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"24.0.7-0ubuntu1",
"24.0.7-0ubuntu2",
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"24.0.7-0ubuntu4",
"24.0.7-0ubuntu4.1",
"26.1.3-0ubuntu1~24.04.1",
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{
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},
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{
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},
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},
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]
},
{
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{
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}
]
},
"package": {
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"name": "docker.io",
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},
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"27.5.1+dfsg4-1ubuntu1",
"27.5.1+dfsg4-2ubuntu1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "docker.io",
"binary_version": "29.1.3-0ubuntu4.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "docker.io-app",
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},
"ranges": [
{
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],
"versions": [
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"29.1.2-0ubuntu1",
"29.1.3-0ubuntu1",
"29.1.3-0ubuntu2",
"29.1.3-0ubuntu3",
"29.1.3-0ubuntu4",
"29.1.3-0ubuntu4.1"
]
}
],
"aliases": [],
"details": "Moby is an open source container framework. Prior to version 29.3.1, a security vulnerability has been detected that allows attackers to bypass authorization plugins (AuthZ). This issue has been patched in version 29.3.1.",
"id": "UBUNTU-CVE-2026-34040",
"modified": "2026-05-20T15:27:23Z",
"published": "2026-03-31T03:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-34040"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-34040"
},
{
"type": "REPORT",
"url": "https://github.com/moby/moby/releases/tag/docker-v29.3.1"
},
{
"type": "REPORT",
"url": "https://github.com/moby/moby/security/advisories/GHSA-x744-4wpc-v9h2"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-34040"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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