8.5

CVE-2026-46448: openstack nova

CVSS: 8.5v3.1HighAnalyzed
AliasesGHSA-mfg3-p6m3-gjgrPYSEC-2026-2686UBUNTU-CVE-2026-46448
Published 16-06-2026Last modified 17-06-2026
Open JSON

Vulnerability summary

CVE-2026-46448 is a high (CVSS 8.5) vulnerability in openstack nova. EPSS estimates a 0.46% chance of exploitation in the next 30 days, higher than 38.2% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
44/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.5/10
010
High · v3.1 (NVD)
EPSS score
0.46%
0%100%
Low · +0.18 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 0 · Related 2
CGA-RJFV-RVJC-C669USN-8434-1

Timeline

  1. 16-06-2026
    PublishedVulnerability first disclosed.
  2. 17-06-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

6 scores · 6 sources · 1 version

EPSS trend

Probability

0.46%

Chance of exploitation in the next 30 days

Percentile

38%

Versus all other CVEs

30-day change

+0.18 pp

From 0.27% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.46%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (bugs.launchpad.net)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Chainguard1 product
  • openstack-nova-2025.2< 32.2.0_git20260616-r2
Debian1 product
  • novaAll versions (No fix recorded) | < 2:33.0.1-4
Openstack1 product
  • nova≥ 18.0.0, < 31.3.1 | ≥ 32.0.0, < 32.2.1 | ≥ 33.0.0, < 33.0.2
PyPI1 product
  • nova≥ 18.0.0, ≤ 31.3.0 | ≥ 32.0.0, < 32.2.1 | ≥ 33.0.0, < 33.0.2
Ubuntu1 product
  • novaAll versions (No fix recorded) | < 3:25.2.1-0ubuntu2.11 | < 3:29.2.0-0ubuntu1.7 | < 3:32.0.0-0ubuntu1.3 | < 3:33.0.0-0ubuntu3.1

5 vendors · 5 products

References

19 links
Show all 19 references