ubuntu-cve-2026-49299
Vulnerability from osv_ubuntu
Published
2026-05-28 22:17
Modified
2026-06-03 11:26
Summary
Details
In OpenStack Neutron before 28.0.1, the tagging controller enforces plural policy action names on single-tag write operations while the defined policy rules use singular names. The mismatched names evaluate as allowed under the default policy, permitting a project reader to create and update tags on same-project resources. Deployments running Neutron 26.0.0 or later are affected.
Severity
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "neutron-bgp-dragent",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-common",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-dhcp-agent",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-l3-agent",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-linuxbridge-agent",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-macvtap-agent",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-metadata-agent",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-metering-agent",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-openvswitch-agent",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-plugin-linuxbridge-agent",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-plugin-ml2",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-plugin-openvswitch-agent",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-plugin-sriov-agent",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-server",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "neutron-sriov-agent",
"binary_version": "2:8.4.0-0ubuntu7.5"
},
{
"binary_name": "python-neutron",
"binary_version": "2:8.4.0-0ubuntu7.5"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "neutron",
"purl": "pkg:deb/ubuntu/neutron@2:8.4.0-0ubuntu7.5?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2:7.0.0-0ubuntu1",
"2:8.0.0~b1-0ubuntu2",
"2:8.0.0~b2-0ubuntu4",
"2:8.0.0~b2-0ubuntu5",
"2:8.0.0~b2-0ubuntu7",
"2:8.0.0~b3-0ubuntu1",
"2:8.0.0~rc1-0ubuntu1",
"2:8.0.0-0ubuntu1",
"2:8.1.0-0ubuntu0.16.04.2",
"2:8.1.2-0ubuntu1",
"2:8.2.0-0ubuntu1",
"2:8.3.0-0ubuntu1",
"2:8.3.0-0ubuntu1.1",
"2:8.3.0-0ubuntu1.2",
"2:8.4.0-0ubuntu1",
"2:8.4.0-0ubuntu2",
"2:8.4.0-0ubuntu3",
"2:8.4.0-0ubuntu4",
"2:8.4.0-0ubuntu5",
"2:8.4.0-0ubuntu6",
"2:8.4.0-0ubuntu7.1",
"2:8.4.0-0ubuntu7.2",
"2:8.4.0-0ubuntu7.3",
"2:8.4.0-0ubuntu7.4",
"2:8.4.0-0ubuntu7.5"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "neutron-common",
"binary_version": "2:12.1.1-0ubuntu8.1"
},
{
"binary_name": "neutron-dhcp-agent",
"binary_version": "2:12.1.1-0ubuntu8.1"
},
{
"binary_name": "neutron-l3-agent",
"binary_version": "2:12.1.1-0ubuntu8.1"
},
{
"binary_name": "neutron-linuxbridge-agent",
"binary_version": "2:12.1.1-0ubuntu8.1"
},
{
"binary_name": "neutron-macvtap-agent",
"binary_version": "2:12.1.1-0ubuntu8.1"
},
{
"binary_name": "neutron-metadata-agent",
"binary_version": "2:12.1.1-0ubuntu8.1"
},
{
"binary_name": "neutron-metering-agent",
"binary_version": "2:12.1.1-0ubuntu8.1"
},
{
"binary_name": "neutron-openvswitch-agent",
"binary_version": "2:12.1.1-0ubuntu8.1"
},
{
"binary_name": "neutron-plugin-linuxbridge-agent",
"binary_version": "2:12.1.1-0ubuntu8.1"
},
{
"binary_name": "neutron-plugin-ml2",
"binary_version": "2:12.1.1-0ubuntu8.1"
},
{
"binary_name": "neutron-plugin-openvswitch-agent",
"binary_version": "2:12.1.1-0ubuntu8.1"
},
{
"binary_name": "neutron-plugin-sriov-agent",
"binary_version": "2:12.1.1-0ubuntu8.1"
},
{
"binary_name": "neutron-server",
"binary_version": "2:12.1.1-0ubuntu8.1"
},
{
"binary_name": "neutron-sriov-agent",
"binary_version": "2:12.1.1-0ubuntu8.1"
},
{
"binary_name": "python-neutron",
"binary_version": "2:12.1.1-0ubuntu8.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "neutron",
"purl": "pkg:deb/ubuntu/neutron@2:12.1.1-0ubuntu8.1?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2:11.0.1-0ubuntu1",
"2:12.0.0~b1-0ubuntu1",
"2:12.0.0~b1-0ubuntu2",
"2:12.0.0~b2-0ubuntu1",
"2:12.0.0~b3-0ubuntu1",
"2:12.0.0~rc1-0ubuntu1",
"2:12.0.0~rc2-0ubuntu1",
"2:12.0.0-0ubuntu1",
"2:12.0.0-0ubuntu1.1",
"2:12.0.0-0ubuntu1.2",
"2:12.0.0-0ubuntu1.3",
"2:12.0.0-0ubuntu1.4",
"2:12.0.0-0ubuntu2",
"2:12.0.0-0ubuntu3",
"2:12.0.1-0ubuntu1",
"2:12.0.1-0ubuntu1.1",
"2:12.0.2-0ubuntu1",
"2:12.0.3-0ubuntu1",
"2:12.0.5-0ubuntu1",
"2:12.0.5-0ubuntu4",
"2:12.0.5-0ubuntu5",
"2:12.0.6-0ubuntu1",
"2:12.0.6-0ubuntu2",
"2:12.0.6-0ubuntu3",
"2:12.1.0-0ubuntu1",
"2:12.1.1-0ubuntu1",
"2:12.1.1-0ubuntu2",
"2:12.1.1-0ubuntu3",
"2:12.1.1-0ubuntu4",
"2:12.1.1-0ubuntu7",
"2:12.1.1-0ubuntu8",
"2:12.1.1-0ubuntu8.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "neutron-common",
"binary_version": "2:16.4.2-0ubuntu6.4"
},
{
"binary_name": "neutron-dhcp-agent",
"binary_version": "2:16.4.2-0ubuntu6.4"
},
{
"binary_name": "neutron-l3-agent",
"binary_version": "2:16.4.2-0ubuntu6.4"
},
{
"binary_name": "neutron-linuxbridge-agent",
"binary_version": "2:16.4.2-0ubuntu6.4"
},
{
"binary_name": "neutron-macvtap-agent",
"binary_version": "2:16.4.2-0ubuntu6.4"
},
{
"binary_name": "neutron-metadata-agent",
"binary_version": "2:16.4.2-0ubuntu6.4"
},
{
"binary_name": "neutron-metering-agent",
"binary_version": "2:16.4.2-0ubuntu6.4"
},
{
"binary_name": "neutron-openvswitch-agent",
"binary_version": "2:16.4.2-0ubuntu6.4"
},
{
"binary_name": "neutron-ovn-metadata-agent",
"binary_version": "2:16.4.2-0ubuntu6.4"
},
{
"binary_name": "neutron-plugin-ml2",
"binary_version": "2:16.4.2-0ubuntu6.4"
},
{
"binary_name": "neutron-server",
"binary_version": "2:16.4.2-0ubuntu6.4"
},
{
"binary_name": "neutron-sriov-agent",
"binary_version": "2:16.4.2-0ubuntu6.4"
},
{
"binary_name": "python3-neutron",
"binary_version": "2:16.4.2-0ubuntu6.4"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "neutron",
"purl": "pkg:deb/ubuntu/neutron@2:16.4.2-0ubuntu6.4?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
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"2:16.0.0~b1~git2019121613.3e8abb9a8f-0ubuntu1",
"2:16.0.0~b2~git2020020712.d5b33ffc77-0ubuntu1",
"2:16.0.0~b2~git2020020712.d5b33ffc77-0ubuntu3",
"2:16.0.0~b3~git2020032420.a0e1b5804e-0ubuntu1",
"2:16.0.0~b3~git2020032420.a0e1b5804e-0ubuntu2",
"2:16.0.0~b3~git2020032420.a0e1b5804e-0ubuntu3",
"2:16.0.0~b3~git2020032420.a0e1b5804e-0ubuntu4",
"2:16.0.0~b3~git2020041013.e74c8f8c88-0ubuntu1",
"2:16.0.0~b3~git2020041516.5f42488a9a-0ubuntu1",
"2:16.0.0~b3~git2020041516.5f42488a9a-0ubuntu2",
"2:16.0.0-0ubuntu0.20.04.1",
"2:16.0.0-0ubuntu0.20.04.2",
"2:16.1.0-0ubuntu1",
"2:16.1.0-0ubuntu2",
"2:16.2.0-0ubuntu1",
"2:16.2.0-0ubuntu2",
"2:16.2.0-0ubuntu3",
"2:16.3.0-0ubuntu3",
"2:16.3.1-0ubuntu1",
"2:16.3.1-0ubuntu1.1",
"2:16.3.2-0ubuntu2",
"2:16.3.2-0ubuntu3",
"2:16.4.0-0ubuntu2",
"2:16.4.0-0ubuntu3",
"2:16.4.1-0ubuntu2",
"2:16.4.2-0ubuntu1",
"2:16.4.2-0ubuntu2",
"2:16.4.2-0ubuntu3",
"2:16.4.2-0ubuntu4",
"2:16.4.2-0ubuntu5",
"2:16.4.2-0ubuntu6",
"2:16.4.2-0ubuntu6.1",
"2:16.4.2-0ubuntu6.2",
"2:16.4.2-0ubuntu6.3",
"2:16.4.2-0ubuntu6.4"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "neutron-common",
"binary_version": "2:20.5.0-0ubuntu2.1"
},
{
"binary_name": "neutron-dhcp-agent",
"binary_version": "2:20.5.0-0ubuntu2.1"
},
{
"binary_name": "neutron-l3-agent",
"binary_version": "2:20.5.0-0ubuntu2.1"
},
{
"binary_name": "neutron-linuxbridge-agent",
"binary_version": "2:20.5.0-0ubuntu2.1"
},
{
"binary_name": "neutron-macvtap-agent",
"binary_version": "2:20.5.0-0ubuntu2.1"
},
{
"binary_name": "neutron-metadata-agent",
"binary_version": "2:20.5.0-0ubuntu2.1"
},
{
"binary_name": "neutron-metering-agent",
"binary_version": "2:20.5.0-0ubuntu2.1"
},
{
"binary_name": "neutron-openvswitch-agent",
"binary_version": "2:20.5.0-0ubuntu2.1"
},
{
"binary_name": "neutron-ovn-metadata-agent",
"binary_version": "2:20.5.0-0ubuntu2.1"
},
{
"binary_name": "neutron-plugin-ml2",
"binary_version": "2:20.5.0-0ubuntu2.1"
},
{
"binary_name": "neutron-server",
"binary_version": "2:20.5.0-0ubuntu2.1"
},
{
"binary_name": "neutron-sriov-agent",
"binary_version": "2:20.5.0-0ubuntu2.1"
},
{
"binary_name": "python3-neutron",
"binary_version": "2:20.5.0-0ubuntu2.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "neutron",
"purl": "pkg:deb/ubuntu/neutron@2:20.5.0-0ubuntu2.1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2:19.0.0-0ubuntu1",
"2:19.1.0+git2022030313.b072cbf05f-0ubuntu1",
"2:20.0.0-0ubuntu1",
"2:20.0.0-0ubuntu2",
"2:20.0.0-0ubuntu3",
"2:20.1.0-0ubuntu2",
"2:20.2.0-0ubuntu1",
"2:20.3.0-0ubuntu1",
"2:20.3.0-0ubuntu1.1",
"2:20.3.1-0ubuntu1",
"2:20.4.0-0ubuntu1",
"2:20.5.0-0ubuntu1",
"2:20.5.0-0ubuntu2",
"2:20.5.0-0ubuntu2.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "neutron-common",
"binary_version": "2:24.1.0-0ubuntu1.2"
},
{
"binary_name": "neutron-dhcp-agent",
"binary_version": "2:24.1.0-0ubuntu1.2"
},
{
"binary_name": "neutron-l3-agent",
"binary_version": "2:24.1.0-0ubuntu1.2"
},
{
"binary_name": "neutron-linuxbridge-agent",
"binary_version": "2:24.1.0-0ubuntu1.2"
},
{
"binary_name": "neutron-macvtap-agent",
"binary_version": "2:24.1.0-0ubuntu1.2"
},
{
"binary_name": "neutron-metadata-agent",
"binary_version": "2:24.1.0-0ubuntu1.2"
},
{
"binary_name": "neutron-metering-agent",
"binary_version": "2:24.1.0-0ubuntu1.2"
},
{
"binary_name": "neutron-openvswitch-agent",
"binary_version": "2:24.1.0-0ubuntu1.2"
},
{
"binary_name": "neutron-ovn-metadata-agent",
"binary_version": "2:24.1.0-0ubuntu1.2"
},
{
"binary_name": "neutron-plugin-ml2",
"binary_version": "2:24.1.0-0ubuntu1.2"
},
{
"binary_name": "neutron-server",
"binary_version": "2:24.1.0-0ubuntu1.2"
},
{
"binary_name": "neutron-sriov-agent",
"binary_version": "2:24.1.0-0ubuntu1.2"
},
{
"binary_name": "python3-neutron",
"binary_version": "2:24.1.0-0ubuntu1.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "neutron",
"purl": "pkg:deb/ubuntu/neutron@2:24.1.0-0ubuntu1.2?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2:23.0.0-0ubuntu1",
"2:24.0.0~b1+git2024011914.5ce17647-0ubuntu1",
"2:24.0.0~rc1-0ubuntu2",
"2:24.0.0-0ubuntu1",
"2:24.0.0-0ubuntu2",
"2:24.1.0-0ubuntu1",
"2:24.1.0-0ubuntu1.1",
"2:24.1.0-0ubuntu1.2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "neutron-api",
"binary_version": "2:27.0.0-0ubuntu1.1"
},
{
"binary_name": "neutron-common",
"binary_version": "2:27.0.0-0ubuntu1.1"
},
{
"binary_name": "neutron-dhcp-agent",
"binary_version": "2:27.0.0-0ubuntu1.1"
},
{
"binary_name": "neutron-l3-agent",
"binary_version": "2:27.0.0-0ubuntu1.1"
},
{
"binary_name": "neutron-macvtap-agent",
"binary_version": "2:27.0.0-0ubuntu1.1"
},
{
"binary_name": "neutron-metadata-agent",
"binary_version": "2:27.0.0-0ubuntu1.1"
},
{
"binary_name": "neutron-metering-agent",
"binary_version": "2:27.0.0-0ubuntu1.1"
},
{
"binary_name": "neutron-openvswitch-agent",
"binary_version": "2:27.0.0-0ubuntu1.1"
},
{
"binary_name": "neutron-ovn-agent",
"binary_version": "2:27.0.0-0ubuntu1.1"
},
{
"binary_name": "neutron-ovn-maintenance-worker",
"binary_version": "2:27.0.0-0ubuntu1.1"
},
{
"binary_name": "neutron-ovn-metadata-agent",
"binary_version": "2:27.0.0-0ubuntu1.1"
},
{
"binary_name": "neutron-periodic-workers",
"binary_version": "2:27.0.0-0ubuntu1.1"
},
{
"binary_name": "neutron-plugin-ml2",
"binary_version": "2:27.0.0-0ubuntu1.1"
},
{
"binary_name": "neutron-rpc-server",
"binary_version": "2:27.0.0-0ubuntu1.1"
},
{
"binary_name": "neutron-server",
"binary_version": "2:27.0.0-0ubuntu1.1"
},
{
"binary_name": "neutron-sriov-agent",
"binary_version": "2:27.0.0-0ubuntu1.1"
},
{
"binary_name": "python3-neutron",
"binary_version": "2:27.0.0-0ubuntu1.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "neutron",
"purl": "pkg:deb/ubuntu/neutron@2:27.0.0-0ubuntu1.1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2:26.0.0-0ubuntu1",
"2:26.0.1+git2025070714.71962255de-0ubuntu1",
"2:26.0.1+git2025070714.71962255de-0ubuntu2",
"2:27.0.0~rc1-0ubuntu1",
"2:27.0.0-0ubuntu1",
"2:27.0.0-0ubuntu1.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "neutron-api",
"binary_version": "2:28.0.0-0ubuntu1"
},
{
"binary_name": "neutron-common",
"binary_version": "2:28.0.0-0ubuntu1"
},
{
"binary_name": "neutron-dhcp-agent",
"binary_version": "2:28.0.0-0ubuntu1"
},
{
"binary_name": "neutron-l3-agent",
"binary_version": "2:28.0.0-0ubuntu1"
},
{
"binary_name": "neutron-macvtap-agent",
"binary_version": "2:28.0.0-0ubuntu1"
},
{
"binary_name": "neutron-metadata-agent",
"binary_version": "2:28.0.0-0ubuntu1"
},
{
"binary_name": "neutron-metering-agent",
"binary_version": "2:28.0.0-0ubuntu1"
},
{
"binary_name": "neutron-openvswitch-agent",
"binary_version": "2:28.0.0-0ubuntu1"
},
{
"binary_name": "neutron-ovn-agent",
"binary_version": "2:28.0.0-0ubuntu1"
},
{
"binary_name": "neutron-ovn-maintenance-worker",
"binary_version": "2:28.0.0-0ubuntu1"
},
{
"binary_name": "neutron-ovn-metadata-agent",
"binary_version": "2:28.0.0-0ubuntu1"
},
{
"binary_name": "neutron-periodic-workers",
"binary_version": "2:28.0.0-0ubuntu1"
},
{
"binary_name": "neutron-plugin-ml2",
"binary_version": "2:28.0.0-0ubuntu1"
},
{
"binary_name": "neutron-rpc-server",
"binary_version": "2:28.0.0-0ubuntu1"
},
{
"binary_name": "neutron-server",
"binary_version": "2:28.0.0-0ubuntu1"
},
{
"binary_name": "neutron-sriov-agent",
"binary_version": "2:28.0.0-0ubuntu1"
},
{
"binary_name": "python3-neutron",
"binary_version": "2:28.0.0-0ubuntu1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "neutron",
"purl": "pkg:deb/ubuntu/neutron@2:28.0.0-0ubuntu1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2:27.0.0-0ubuntu1",
"2:28.0.0~b2+git20260121.28.762694d1bd-0ubuntu1",
"2:28.0.0~rc1-0ubuntu1",
"2:28.0.0~rc2-0ubuntu1",
"2:28.0.0-0ubuntu1"
]
}
],
"aliases": [],
"details": "In OpenStack Neutron before 28.0.1, the tagging controller enforces plural policy action names on single-tag write operations while the defined policy rules use singular names. The mismatched names evaluate as allowed under the default policy, permitting a project reader to create and update tags on same-project resources. Deployments running Neutron 26.0.0 or later are affected.",
"id": "UBUNTU-CVE-2026-49299",
"modified": "2026-06-03T11:26:16Z",
"published": "2026-05-28T22:17:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-49299"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-49299"
},
{
"type": "REPORT",
"url": "https://security.openstack.org/ossa/OSSA-2026-016.html"
},
{
"type": "REPORT",
"url": "https://bugs.launchpad.net/bugs/2150132"
},
{
"type": "REPORT",
"url": "https://review.opendev.org/c/openstack/neutron/+/989099"
},
{
"type": "REPORT",
"url": "https://www.openwall.com/lists/oss-security/2026/05/28/8"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-49299"
]
}
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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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