Review reviewHigh

CVE-2026-46448

OpenStack Nova, nova

In OpenStack Nova before 33.0.2, the server create API does not strip certain hint data. The resulting instance has no Placement allocation.

PRIORITY ASSESSMENT

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.27%

Technical severityCVSS 8.5

In OpenStack Nova before 33.0.2, the server create API does not strip certain hint data. The resulting instance has no Placement allocation.

Product: OpenStack Nova, nova
Affected versions: 18.0.0, 32.0.0, 33.0.0, >= 18.0.0 < 31.3.1, >= 32.0.0 < 32.2.1, >= 33.0.0 < 33.0.2
Fixed versions: 31.3.1, 32.2.1, 33.0.2

Confirm exposure before applying a vendor-supported change.

1
Identify
Confirm that OpenStack Nova, nova and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.