USN-8421-1 (UBUNTU-CVE-2026-44917)
Vulnerability from osv_ubuntu – Published: 2026-06-11 12:22 – Updated: 2026-06-11 12:22 – Source website
VLAI
Summary
ironic vulnerabilities
Details
Dmitry Tantsur and Tuomo Tanskanen discovered that Ironic did not properly validate file paths when handling ISO images. A privileged authenticated remote user could use this issue to perform path traversal via a crafted ISO image and overwrite arbitrary files on the Ironic conductor. (CVE-2026-48681)
Dmitry Tantsur and Tuomo Tanskanen discovered that Ironic did not properly validate kernel command line parameters. A privileged authenticated remote user could use this issue to inject scripts during node boot and possibly execute arbitrary code. (CVE-2026-46447)
Dmitry Tantsur and Tuomo Tanskanen discovered that Ironic incorrectly restricted access to custom PXE templates. A privileged authenticated remote user could use this issue to read arbitrary sensitive files on the Ironic conductor. (CVE-2026-44917)
References
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-44917",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-46447",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-48681",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:22.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "ironic-api",
"binary_version": "1:20.1.0-0ubuntu1.3"
},
{
"binary_name": "ironic-common",
"binary_version": "1:20.1.0-0ubuntu1.3"
},
{
"binary_name": "ironic-conductor",
"binary_version": "1:20.1.0-0ubuntu1.3"
},
{
"binary_name": "python3-ironic",
"binary_version": "1:20.1.0-0ubuntu1.3"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "ironic",
"purl": "pkg:deb/ubuntu/ironic@1:20.1.0-0ubuntu1.3?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:20.1.0-0ubuntu1.3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:18.2.0-0ubuntu1",
"1:18.2.0+git2021120910.cdc3b9538-0ubuntu1",
"1:19.0.0+git2022011216.7beadee46-0ubuntu1",
"1:20.0.0+git2022030313.4e6a3d52e-0ubuntu1",
"1:20.1.0-0ubuntu1",
"1:20.1.0-0ubuntu1.1",
"1:20.1.0-0ubuntu1.2"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-44917",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-46447",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-48681",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:24.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "ironic-api",
"binary_version": "1:24.1.1-0ubuntu1.3"
},
{
"binary_name": "ironic-common",
"binary_version": "1:24.1.1-0ubuntu1.3"
},
{
"binary_name": "ironic-conductor",
"binary_version": "1:24.1.1-0ubuntu1.3"
},
{
"binary_name": "python3-ironic",
"binary_version": "1:24.1.1-0ubuntu1.3"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "ironic",
"purl": "pkg:deb/ubuntu/ironic@1:24.1.1-0ubuntu1.3?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:24.1.1-0ubuntu1.3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:23.0.0-0ubuntu3",
"1:23.1.0+git2024011916.a374a0c1-0ubuntu1",
"1:24.1.0-0ubuntu1",
"1:24.1.1-0ubuntu1",
"1:24.1.1-0ubuntu1.2"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-44917",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-46447",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-48681",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:25.10"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "ironic-api",
"binary_version": "1:32.0.0-0ubuntu1.1"
},
{
"binary_name": "ironic-common",
"binary_version": "1:32.0.0-0ubuntu1.1"
},
{
"binary_name": "ironic-conductor",
"binary_version": "1:32.0.0-0ubuntu1.1"
},
{
"binary_name": "python3-ironic",
"binary_version": "1:32.0.0-0ubuntu1.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "ironic",
"purl": "pkg:deb/ubuntu/ironic@1:32.0.0-0ubuntu1.1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:32.0.0-0ubuntu1.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:29.0.0-0ubuntu1",
"1:30.0.0+git2025070713.577833d78-0ubuntu1",
"1:30.0.0+git2025070713.577833d78-0ubuntu2",
"1:32.0.0-0ubuntu1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-44917",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-46447",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2026-48681",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:26.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "ironic-api",
"binary_version": "1:35.0.0-0ubuntu2.1"
},
{
"binary_name": "ironic-common",
"binary_version": "1:35.0.0-0ubuntu2.1"
},
{
"binary_name": "ironic-conductor",
"binary_version": "1:35.0.0-0ubuntu2.1"
},
{
"binary_name": "python3-ironic",
"binary_version": "1:35.0.0-0ubuntu2.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "ironic",
"purl": "pkg:deb/ubuntu/ironic@1:35.0.0-0ubuntu2.1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:35.0.0-0ubuntu2.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:32.0.0-0ubuntu1",
"1:34.0.0-0ubuntu1",
"1:35.0.0-0ubuntu1",
"1:35.0.0-0ubuntu2"
]
}
],
"aliases": [],
"details": "Dmitry Tantsur and Tuomo Tanskanen discovered that Ironic did not\nproperly validate file paths when handling ISO images. A privileged\nauthenticated remote user could use this issue to perform path\ntraversal via a crafted ISO image and overwrite arbitrary files on\nthe Ironic conductor. (CVE-2026-48681)\n\nDmitry Tantsur and Tuomo Tanskanen discovered that Ironic did not\nproperly validate kernel command line parameters. A privileged\nauthenticated remote user could use this issue to inject\nscripts during node boot and possibly execute arbitrary code.\n(CVE-2026-46447)\n\nDmitry Tantsur and Tuomo Tanskanen discovered that Ironic\nincorrectly restricted access to custom PXE templates. A privileged\nauthenticated remote user could use this issue to read arbitrary\nsensitive files on the Ironic conductor. (CVE-2026-44917)",
"id": "USN-8421-1",
"modified": "2026-06-11T12:22:01Z",
"published": "2026-06-11T12:22:01Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8421-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-44917"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-46447"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-48681"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "ironic vulnerabilities",
"upstream": [
"UBUNTU-CVE-2026-44917",
"UBUNTU-CVE-2026-46447",
"UBUNTU-CVE-2026-48681"
]
}
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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.
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- 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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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