Vulnerability · Published Jun 16, 2026 · Assigned by mitre
CVE-2026-46448
Medium 5.4
In plain English
A medium-severity security flaw in Nova from OpenStack. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.4Medium
Exploit odds (30 days)0.3%top 80.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | nova | no fix listed | DEBIAN-CVE-2026-46448 |
| Debian:13 | nova | no fix listed | DEBIAN-CVE-2026-46448 |
| Debian:14 | nova | 2:33.0.1-4 | DEBIAN-CVE-2026-46448 |
| PyPI | nova | 32.2.1 | GHSA-mfg3-p6m3-gjgr |
| PyPI | nova | no fix listed | GHSA-mfg3-p6m3-gjgr |
| PyPI | nova | 33.0.2 | GHSA-mfg3-p6m3-gjgr |
| PyPI | nova | 31.3.1, 32.2.1, 33.0.2 | PYSEC-2026-2686 |
| Ubuntu:22.04:LTS | nova | 3:25.2.1-0ubuntu2.11 | UBUNTU-CVE-2026-46448 |
| Ubuntu:24.04:LTS | nova | 3:29.2.0-0ubuntu1.7 | UBUNTU-CVE-2026-46448 |
| Ubuntu:25.10 | nova | 3:32.0.0-0ubuntu1.3 | UBUNTU-CVE-2026-46448 |
| Ubuntu:26.04:LTS | nova | 3:33.0.0-0ubuntu3.1 | UBUNTU-CVE-2026-46448 |
Affected products (as reported)
Weakness: CWE-669 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L