What is CVE-2026-46448?

CVE-2026-46448 is a medium-severity vulnerability in Openstack Nova, classified under Incorrect Resource Transfer Between Spheres. CVSS score: 5.4/10. Published 2026-06-16.

How severe is CVE-2026-46448?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in Openstack Nova

CVE-2026-46448

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

EPSS: 0.003 (19.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L.

Affected products

Openstack Nova — versions 18.0.0, 32.0.0, 33.0.0

Weakness classification (CWE)

CWE-669 — Incorrect Resource Transfer Between Spheres

References

cve@mitre.org (Exploit, Third Party Advisory, Issue Tracking)
cve@mitre.org (Mailing List, Third Party Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-46448?: CVE-2026-46448 is a medium-severity vulnerability in Openstack Nova, classified under Incorrect Resource Transfer Between Spheres. CVSS score: 5.4/10. Published 2026-06-16.
How severe is CVE-2026-46448?: Medium severity. CVSS v3 base score is 5.4 out of 10.