usn-8434-1
Vulnerability from osv_ubuntu
Published
2026-06-16 14:45
Modified
2026-06-29 10:54
Summary
nova vulnerability
Details
It was discovered that Nova did not strip internal _nova-prefixed scheduler hints supplied by users on instance creation. An attacker could possibly use this issue to bypass Placement resource claims and scheduling constraint enforcement.
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-46448",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:22.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "nova-ajax-console-proxy",
"binary_version": "3:25.2.1-0ubuntu2.11"
},
{
"binary_name": "nova-api",
"binary_version": "3:25.2.1-0ubuntu2.11"
},
{
"binary_name": "nova-api-metadata",
"binary_version": "3:25.2.1-0ubuntu2.11"
},
{
"binary_name": "nova-api-os-compute",
"binary_version": "3:25.2.1-0ubuntu2.11"
},
{
"binary_name": "nova-api-os-volume",
"binary_version": "3:25.2.1-0ubuntu2.11"
},
{
"binary_name": "nova-cells",
"binary_version": "3:25.2.1-0ubuntu2.11"
},
{
"binary_name": "nova-common",
"binary_version": "3:25.2.1-0ubuntu2.11"
},
{
"binary_name": "nova-compute",
"binary_version": "3:25.2.1-0ubuntu2.11"
},
{
"binary_name": "nova-compute-ironic",
"binary_version": "3:25.2.1-0ubuntu2.11"
},
{
"binary_name": "nova-compute-kvm",
"binary_version": "3:25.2.1-0ubuntu2.11"
},
{
"binary_name": "nova-compute-libvirt",
"binary_version": "3:25.2.1-0ubuntu2.11"
},
{
"binary_name": "nova-compute-lxc",
"binary_version": "3:25.2.1-0ubuntu2.11"
},
{
"binary_name": "nova-compute-qemu",
"binary_version": "3:25.2.1-0ubuntu2.11"
},
{
"binary_name": "nova-compute-vmware",
"binary_version": "3:25.2.1-0ubuntu2.11"
},
{
"binary_name": "nova-compute-xen",
"binary_version": "3:25.2.1-0ubuntu2.11"
},
{
"binary_name": "nova-conductor",
"binary_version": "3:25.2.1-0ubuntu2.11"
},
{
"binary_name": "nova-novncproxy",
"binary_version": "3:25.2.1-0ubuntu2.11"
},
{
"binary_name": "nova-scheduler",
"binary_version": "3:25.2.1-0ubuntu2.11"
},
{
"binary_name": "nova-serialproxy",
"binary_version": "3:25.2.1-0ubuntu2.11"
},
{
"binary_name": "nova-spiceproxy",
"binary_version": "3:25.2.1-0ubuntu2.11"
},
{
"binary_name": "nova-volume",
"binary_version": "3:25.2.1-0ubuntu2.11"
},
{
"binary_name": "python3-nova",
"binary_version": "3:25.2.1-0ubuntu2.11"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "nova",
"purl": "pkg:deb/ubuntu/nova@3:25.2.1-0ubuntu2.11?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3:25.2.1-0ubuntu2.11"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3:24.0.0-0ubuntu1",
"3:24.0.0+git2022030310.3f274c65cc-0ubuntu2",
"3:25.0.0-0ubuntu1",
"3:25.0.0-0ubuntu1.1",
"3:25.0.1-0ubuntu1",
"3:25.1.0-0ubuntu1",
"3:25.1.0-0ubuntu2",
"3:25.1.0-0ubuntu2.1",
"3:25.1.0-0ubuntu2.2",
"3:25.1.1-0ubuntu1",
"3:25.1.1-0ubuntu1.1",
"3:25.2.0-0ubuntu1",
"3:25.2.1-0ubuntu1",
"3:25.2.1-0ubuntu2",
"3:25.2.1-0ubuntu2.3",
"3:25.2.1-0ubuntu2.6",
"3:25.2.1-0ubuntu2.7",
"3:25.2.1-0ubuntu2.8",
"3:25.2.1-0ubuntu2.9",
"3:25.2.1-0ubuntu2.10"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-46448",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:24.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "nova-ajax-console-proxy",
"binary_version": "3:29.2.0-0ubuntu1.7"
},
{
"binary_name": "nova-api",
"binary_version": "3:29.2.0-0ubuntu1.7"
},
{
"binary_name": "nova-api-metadata",
"binary_version": "3:29.2.0-0ubuntu1.7"
},
{
"binary_name": "nova-api-os-compute",
"binary_version": "3:29.2.0-0ubuntu1.7"
},
{
"binary_name": "nova-api-os-volume",
"binary_version": "3:29.2.0-0ubuntu1.7"
},
{
"binary_name": "nova-cells",
"binary_version": "3:29.2.0-0ubuntu1.7"
},
{
"binary_name": "nova-common",
"binary_version": "3:29.2.0-0ubuntu1.7"
},
{
"binary_name": "nova-compute",
"binary_version": "3:29.2.0-0ubuntu1.7"
},
{
"binary_name": "nova-compute-ironic",
"binary_version": "3:29.2.0-0ubuntu1.7"
},
{
"binary_name": "nova-compute-kvm",
"binary_version": "3:29.2.0-0ubuntu1.7"
},
{
"binary_name": "nova-compute-libvirt",
"binary_version": "3:29.2.0-0ubuntu1.7"
},
{
"binary_name": "nova-compute-lxc",
"binary_version": "3:29.2.0-0ubuntu1.7"
},
{
"binary_name": "nova-compute-qemu",
"binary_version": "3:29.2.0-0ubuntu1.7"
},
{
"binary_name": "nova-compute-vmware",
"binary_version": "3:29.2.0-0ubuntu1.7"
},
{
"binary_name": "nova-compute-xen",
"binary_version": "3:29.2.0-0ubuntu1.7"
},
{
"binary_name": "nova-conductor",
"binary_version": "3:29.2.0-0ubuntu1.7"
},
{
"binary_name": "nova-novncproxy",
"binary_version": "3:29.2.0-0ubuntu1.7"
},
{
"binary_name": "nova-scheduler",
"binary_version": "3:29.2.0-0ubuntu1.7"
},
{
"binary_name": "nova-serialproxy",
"binary_version": "3:29.2.0-0ubuntu1.7"
},
{
"binary_name": "nova-spiceproxy",
"binary_version": "3:29.2.0-0ubuntu1.7"
},
{
"binary_name": "nova-volume",
"binary_version": "3:29.2.0-0ubuntu1.7"
},
{
"binary_name": "python3-nova",
"binary_version": "3:29.2.0-0ubuntu1.7"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "nova",
"purl": "pkg:deb/ubuntu/nova@3:29.2.0-0ubuntu1.7?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3:29.2.0-0ubuntu1.7"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3:28.0.0-0ubuntu1",
"3:28.0.1+git2024011916.087c372a-0ubuntu1",
"3:28.0.1+git2024011916.087c372a-0ubuntu2",
"3:29.0.0~rc1-0ubuntu2",
"3:29.0.1-0ubuntu1",
"3:29.0.1-0ubuntu1.3",
"3:29.0.1-0ubuntu1.4",
"3:29.2.0-0ubuntu1",
"3:29.2.0-0ubuntu1.1",
"3:29.2.0-0ubuntu1.2",
"3:29.2.0-0ubuntu1.3",
"3:29.2.0-0ubuntu1.4",
"3:29.2.0-0ubuntu1.5"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-46448",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:25.10"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "nova-ajax-console-proxy",
"binary_version": "3:32.0.0-0ubuntu1.3"
},
{
"binary_name": "nova-api",
"binary_version": "3:32.0.0-0ubuntu1.3"
},
{
"binary_name": "nova-api-metadata",
"binary_version": "3:32.0.0-0ubuntu1.3"
},
{
"binary_name": "nova-api-os-compute",
"binary_version": "3:32.0.0-0ubuntu1.3"
},
{
"binary_name": "nova-api-os-volume",
"binary_version": "3:32.0.0-0ubuntu1.3"
},
{
"binary_name": "nova-cells",
"binary_version": "3:32.0.0-0ubuntu1.3"
},
{
"binary_name": "nova-common",
"binary_version": "3:32.0.0-0ubuntu1.3"
},
{
"binary_name": "nova-compute",
"binary_version": "3:32.0.0-0ubuntu1.3"
},
{
"binary_name": "nova-compute-ironic",
"binary_version": "3:32.0.0-0ubuntu1.3"
},
{
"binary_name": "nova-compute-kvm",
"binary_version": "3:32.0.0-0ubuntu1.3"
},
{
"binary_name": "nova-compute-libvirt",
"binary_version": "3:32.0.0-0ubuntu1.3"
},
{
"binary_name": "nova-compute-lxc",
"binary_version": "3:32.0.0-0ubuntu1.3"
},
{
"binary_name": "nova-compute-qemu",
"binary_version": "3:32.0.0-0ubuntu1.3"
},
{
"binary_name": "nova-compute-vmware",
"binary_version": "3:32.0.0-0ubuntu1.3"
},
{
"binary_name": "nova-compute-xen",
"binary_version": "3:32.0.0-0ubuntu1.3"
},
{
"binary_name": "nova-conductor",
"binary_version": "3:32.0.0-0ubuntu1.3"
},
{
"binary_name": "nova-novncproxy",
"binary_version": "3:32.0.0-0ubuntu1.3"
},
{
"binary_name": "nova-scheduler",
"binary_version": "3:32.0.0-0ubuntu1.3"
},
{
"binary_name": "nova-serialproxy",
"binary_version": "3:32.0.0-0ubuntu1.3"
},
{
"binary_name": "nova-spiceproxy",
"binary_version": "3:32.0.0-0ubuntu1.3"
},
{
"binary_name": "nova-volume",
"binary_version": "3:32.0.0-0ubuntu1.3"
},
{
"binary_name": "python3-nova",
"binary_version": "3:32.0.0-0ubuntu1.3"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "nova",
"purl": "pkg:deb/ubuntu/nova@3:32.0.0-0ubuntu1.3?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3:32.0.0-0ubuntu1.3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3:31.0.0-0ubuntu1",
"3:31.0.0+git2025070714.1c03429337-0ubuntu1",
"3:31.0.0+git2025070714.1c03429337-0ubuntu2",
"3:32.0.0~rc1-0ubuntu1",
"3:32.0.0-0ubuntu1",
"3:32.0.0-0ubuntu1.1",
"3:32.0.0-0ubuntu1.2"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-46448",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:26.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "nova-ajax-console-proxy",
"binary_version": "3:33.0.0-0ubuntu3.1"
},
{
"binary_name": "nova-api",
"binary_version": "3:33.0.0-0ubuntu3.1"
},
{
"binary_name": "nova-api-metadata",
"binary_version": "3:33.0.0-0ubuntu3.1"
},
{
"binary_name": "nova-api-os-compute",
"binary_version": "3:33.0.0-0ubuntu3.1"
},
{
"binary_name": "nova-api-os-volume",
"binary_version": "3:33.0.0-0ubuntu3.1"
},
{
"binary_name": "nova-cells",
"binary_version": "3:33.0.0-0ubuntu3.1"
},
{
"binary_name": "nova-common",
"binary_version": "3:33.0.0-0ubuntu3.1"
},
{
"binary_name": "nova-compute",
"binary_version": "3:33.0.0-0ubuntu3.1"
},
{
"binary_name": "nova-compute-ironic",
"binary_version": "3:33.0.0-0ubuntu3.1"
},
{
"binary_name": "nova-compute-kvm",
"binary_version": "3:33.0.0-0ubuntu3.1"
},
{
"binary_name": "nova-compute-libvirt",
"binary_version": "3:33.0.0-0ubuntu3.1"
},
{
"binary_name": "nova-compute-lxc",
"binary_version": "3:33.0.0-0ubuntu3.1"
},
{
"binary_name": "nova-compute-qemu",
"binary_version": "3:33.0.0-0ubuntu3.1"
},
{
"binary_name": "nova-compute-vmware",
"binary_version": "3:33.0.0-0ubuntu3.1"
},
{
"binary_name": "nova-compute-xen",
"binary_version": "3:33.0.0-0ubuntu3.1"
},
{
"binary_name": "nova-conductor",
"binary_version": "3:33.0.0-0ubuntu3.1"
},
{
"binary_name": "nova-novncproxy",
"binary_version": "3:33.0.0-0ubuntu3.1"
},
{
"binary_name": "nova-scheduler",
"binary_version": "3:33.0.0-0ubuntu3.1"
},
{
"binary_name": "nova-serialproxy",
"binary_version": "3:33.0.0-0ubuntu3.1"
},
{
"binary_name": "nova-spiceproxy",
"binary_version": "3:33.0.0-0ubuntu3.1"
},
{
"binary_name": "nova-volume",
"binary_version": "3:33.0.0-0ubuntu3.1"
},
{
"binary_name": "python3-nova",
"binary_version": "3:33.0.0-0ubuntu3.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "nova",
"purl": "pkg:deb/ubuntu/nova@3:33.0.0-0ubuntu3.1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3:33.0.0-0ubuntu3.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3:32.0.0-0ubuntu1",
"3:32.0.0+git20260128.59a7093-0ubuntu1",
"3:33.0.0~rc1-0ubuntu1",
"3:33.0.0-0ubuntu3"
]
}
],
"aliases": [],
"details": "It was discovered that Nova did not strip internal _nova-prefixed\nscheduler hints supplied by users on instance creation. An attacker could\npossibly use this issue to bypass Placement resource claims and\nscheduling constraint enforcement.",
"id": "USN-8434-1",
"modified": "2026-06-29T10:54:21Z",
"published": "2026-06-16T14:45:58Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8434-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-46448"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "nova vulnerability",
"upstream": [
"UBUNTU-CVE-2026-46448"
]
}
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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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