ubuntu-cve-2026-71192
Vulnerability from osv_ubuntu
Published
2026-08-05 06:16
Modified
2026-08-05 06:16
Summary
Details
In OpenStack Swift through 2.38.0, the S3API middleware does not sanitize Swift-native control headers (X-Copy-From, X-Copy-From-Account) from S3 API requests when s3_acl=true. An attacker can inject these headers into a signed PUT request targeting their own bucket, causing Swift to perform a server-side copy from another tenant's private object. The source object authorization is bypassed because the S3API middleware has already authorized the request against the destination. The attacker can read any object whose project_id, container name, and object name are known, regardless of the source object's ACLs or ownership. This requires the non-default s3_acl=true configuration.
Severity
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python-swift",
"binary_version": "2.7.1-0ubuntu2"
},
{
"binary_name": "swift",
"binary_version": "2.7.1-0ubuntu2"
},
{
"binary_name": "swift-account",
"binary_version": "2.7.1-0ubuntu2"
},
{
"binary_name": "swift-container",
"binary_version": "2.7.1-0ubuntu2"
},
{
"binary_name": "swift-object",
"binary_version": "2.7.1-0ubuntu2"
},
{
"binary_name": "swift-object-expirer",
"binary_version": "2.7.1-0ubuntu2"
},
{
"binary_name": "swift-proxy",
"binary_version": "2.7.1-0ubuntu2"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "swift",
"purl": "pkg:deb/ubuntu/swift@2.7.1-0ubuntu2?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.5.0-0ubuntu1",
"2.7.0-0ubuntu2",
"2.7.0-0ubuntu2.1",
"2.7.1-0ubuntu1",
"2.7.1-0ubuntu2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python-swift",
"binary_version": "2.17.1-0ubuntu1"
},
{
"binary_name": "swift",
"binary_version": "2.17.1-0ubuntu1"
},
{
"binary_name": "swift-account",
"binary_version": "2.17.1-0ubuntu1"
},
{
"binary_name": "swift-container",
"binary_version": "2.17.1-0ubuntu1"
},
{
"binary_name": "swift-object",
"binary_version": "2.17.1-0ubuntu1"
},
{
"binary_name": "swift-object-expirer",
"binary_version": "2.17.1-0ubuntu1"
},
{
"binary_name": "swift-proxy",
"binary_version": "2.17.1-0ubuntu1"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "swift",
"purl": "pkg:deb/ubuntu/swift@2.17.1-0ubuntu1?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.15.1-0ubuntu3",
"2.16.0-0ubuntu1",
"2.16.0-0ubuntu2",
"2.17.0-0ubuntu1",
"2.17.1-0ubuntu1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-swift",
"binary_version": "2.25.2-0ubuntu1.1"
},
{
"binary_name": "swift",
"binary_version": "2.25.2-0ubuntu1.1"
},
{
"binary_name": "swift-account",
"binary_version": "2.25.2-0ubuntu1.1"
},
{
"binary_name": "swift-container",
"binary_version": "2.25.2-0ubuntu1.1"
},
{
"binary_name": "swift-object",
"binary_version": "2.25.2-0ubuntu1.1"
},
{
"binary_name": "swift-object-expirer",
"binary_version": "2.25.2-0ubuntu1.1"
},
{
"binary_name": "swift-proxy",
"binary_version": "2.25.2-0ubuntu1.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "swift",
"purl": "pkg:deb/ubuntu/swift@2.25.2-0ubuntu1.1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.23.0-0ubuntu1",
"2.23.1-0ubuntu1",
"2.24.0~git2019121715.e890b0f0f-0ubuntu1",
"2.24.0-0ubuntu1",
"2.24.1~git2020032711.712bf3c9f-0ubuntu2",
"2.24.1~git2020041316.a495f1e32-0ubuntu1",
"2.25.0-0ubuntu0.20.04.1",
"2.25.1-0ubuntu1",
"2.25.2-0ubuntu1",
"2.25.2-0ubuntu1.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-swift",
"binary_version": "2.29.2-0ubuntu1.1"
},
{
"binary_name": "swift",
"binary_version": "2.29.2-0ubuntu1.1"
},
{
"binary_name": "swift-account",
"binary_version": "2.29.2-0ubuntu1.1"
},
{
"binary_name": "swift-container",
"binary_version": "2.29.2-0ubuntu1.1"
},
{
"binary_name": "swift-object",
"binary_version": "2.29.2-0ubuntu1.1"
},
{
"binary_name": "swift-object-expirer",
"binary_version": "2.29.2-0ubuntu1.1"
},
{
"binary_name": "swift-proxy",
"binary_version": "2.29.2-0ubuntu1.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "swift",
"purl": "pkg:deb/ubuntu/swift@2.29.2-0ubuntu1.1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.28.0+git2021090911.5d52afbe4-0ubuntu1",
"2.28.0+git2021120815.1859f2e16-0ubuntu1",
"2.28.0+git2021121320.876377435-0ubuntu1",
"2.28.0+git2022011309.32da73f5c-0ubuntu1",
"2.29.0+git2022030314.3ff3076ce-0ubuntu1",
"2.29.0+git2022030314.3ff3076ce-0ubuntu2",
"2.29.1-0ubuntu1",
"2.29.2-0ubuntu1",
"2.29.2-0ubuntu1.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-swift",
"binary_version": "2.33.0-0ubuntu1.1"
},
{
"binary_name": "swift",
"binary_version": "2.33.0-0ubuntu1.1"
},
{
"binary_name": "swift-account",
"binary_version": "2.33.0-0ubuntu1.1"
},
{
"binary_name": "swift-container",
"binary_version": "2.33.0-0ubuntu1.1"
},
{
"binary_name": "swift-object",
"binary_version": "2.33.0-0ubuntu1.1"
},
{
"binary_name": "swift-object-expirer",
"binary_version": "2.33.0-0ubuntu1.1"
},
{
"binary_name": "swift-proxy",
"binary_version": "2.33.0-0ubuntu1.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "swift",
"purl": "pkg:deb/ubuntu/swift@2.33.0-0ubuntu1.1?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.32.0+git2023090714.8ce961ed-0ubuntu1",
"2.32.0+git2024021508.3aba22fd-0ubuntu1",
"2.32.0+git2024030809.4135133a-0ubuntu1",
"2.33.0-0ubuntu1",
"2.33.0-0ubuntu1.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "python3-swift",
"binary_version": "2.37.1-0ubuntu2"
},
{
"binary_name": "swift",
"binary_version": "2.37.1-0ubuntu2"
},
{
"binary_name": "swift-account",
"binary_version": "2.37.1-0ubuntu2"
},
{
"binary_name": "swift-container",
"binary_version": "2.37.1-0ubuntu2"
},
{
"binary_name": "swift-object",
"binary_version": "2.37.1-0ubuntu2"
},
{
"binary_name": "swift-object-expirer",
"binary_version": "2.37.1-0ubuntu2"
},
{
"binary_name": "swift-proxy",
"binary_version": "2.37.1-0ubuntu2"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "swift",
"purl": "pkg:deb/ubuntu/swift@2.37.1-0ubuntu2?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.36.0-0ubuntu1",
"2.37.0-0ubuntu1",
"2.37.1-0ubuntu2"
]
}
],
"aliases": [],
"details": "In OpenStack Swift through 2.38.0, the S3API middleware does not sanitize Swift-native control headers (X-Copy-From, X-Copy-From-Account) from S3 API requests when s3_acl=true. An attacker can inject these headers into a signed PUT request targeting their own bucket, causing Swift to perform a server-side copy from another tenant\u0027s private object. The source object authorization is bypassed because the S3API middleware has already authorized the request against the destination. The attacker can read any object whose project_id, container name, and object name are known, regardless of the source object\u0027s ACLs or ownership. This requires the non-default s3_acl=true configuration.",
"id": "UBUNTU-CVE-2026-71192",
"modified": "2026-08-05T06:16:00Z",
"published": "2026-08-05T06:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-71192"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-71192"
},
{
"type": "REPORT",
"url": "https://security.openstack.org/ossa/OSSA-2026-030.html"
},
{
"type": "REPORT",
"url": "https://bugs.launchpad.net/swift/+bug/2158733"
},
{
"type": "REPORT",
"url": "https://launchpad.net/bugs/2158733"
},
{
"type": "REPORT",
"url": "https://openwall.com/lists/oss-security/2026/07/28/26"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-71192"
]
}
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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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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