CVE-2026-46448

openstack-nova: OpenStack Nova: Resource allocation issue due to unstripped hint data in server creation API

Published Jun 16, 2026 CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed
Description
In OpenStack Nova before 33.0.2, the server create API does not strip certain hint data. The resulting instance has no Placement allocation.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4900-1 nova security update
Github GHSA Github GHSA GHSA-mfg3-p6m3-gjgr OpenStack Nova: Nova scheduler hint injection bypasses Placement resource claims and scheduling constraints
History
Type Values Removed Values Added
Title OpenStack Nova Create Instance API Leaves Unstripped Hint Data, Causing Missing Placement Allocation openstack-nova: OpenStack Nova: Resource allocation issue due to unstripped hint data in server creation API
Weaknesses CWE-1173
References
Metrics threat_severity

None

threat_severity

Moderate

Type Values Removed Values Added
Title OpenStack Nova Create Instance API Leaves Unstripped Hint Data, Causing Missing Placement Allocation
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description In OpenStack Nova before 33.0.2, the server create API does not strip certain hint data. The resulting instance has no Placement allocation.
First Time appeared Openstack
Openstack nova
Weaknesses CWE-669
CPEs cpe:2.3:a:openstack:nova:*:*:*:*:*:*:*:*
Vendors & Products Openstack
Openstack nova
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Nov 12, 2026, 11:04 PM
Reserved
May 14, 2026, 12:00 AM
Status
Modified
Published
Jun 16, 2026, 8:16 PM
Modified
Nov 13, 2026, 12:20 AM
Severity
Moderate
Public date
Jun 16, 2026, 12:00 AM