OpenStack Nova <33.0.2: Server Create API Misses Placement Alloc
CVE-2026-46448 Published on June 16, 2026
In OpenStack Nova before 33.0.2, the server create API does not strip certain hint data. The resulting instance has no Placement allocation.
Vulnerability Analysis
CVE-2026-46448 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. Public availability of a proof of concept (POC) exploit exists for CVE-2026-46448. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity, and a small impact on availability.
Weakness Type
Incorrect Resource Transfer Between Spheres
The product does not properly transfer a resource/behavior to another sphere, or improperly imports a resource/behavior from another sphere, in a manner that provides unintended control over that resource.
Products Associated with CVE-2026-46448
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Affected Versions
OpenStack Nova:- Version 18.0.0 and below 31.3.1 is affected.
- Version 32.0.0 and below 32.2.1 is affected.
- Version 33.0.0 and below 33.0.2 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.