PYSEC-2026-692
See a problem?- Import Source
- https://github.com/pypa/advisory-database/blob/main/vulns/nova/PYSEC-2026-692.yaml
- JSON Data
- https://api.osv.dev/v1/vulns/PYSEC-2026-692
- Aliases
- Published
- 2026-07-02T14:13:24.579916Z
- Modified
- 2026-07-06T08:00:47.619952818Z
- Severity
-
- 8.6 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H CVSS Calculator
- Summary
- OpenStack Nova DoS by rebuilding the same instance with a new image multiple times
- Details
-
An issue was discovered in the default FilterScheduler in OpenStack Nova 16.0.3. By repeatedly rebuilding an instance with new images, an authenticated user may consume untracked resources on a hypervisor host leading to a denial of service, aka doubled resource allocations. This regression was introduced with the fix for OSSA-2017-005 (CVE-2017-16239); however, only Nova stable/pike or later deployments with that fix applied and relying on the default FilterScheduler are affected.
- References
-
- https://nvd.nist.gov/vuln/detail/CVE-2017-17051
- https://github.com/openstack/nova/commit/25a1d78e83065c5bea5d8e0a017fd9d0914d41d9
- https://github.com/openstack/nova/commit/fed660c1189fdf4159d97badfdc8c5b35ad14f23
- https://github.com/openstack/nova
- https://launchpad.net/bugs/1732976
- https://review.openstack.org/521662
- https://review.openstack.org/523214
- https://security.openstack.org/ossa/OSSA-2017-006.html
- http://www.securityfocus.com/bid/102102
- https://pypi.org/project/nova
- https://github.com/advisories/GHSA-vq76-rxx3-4r4r
Affected packages
PyPI / nova
Package
- Name
- nova
- View open source insights on deps.dev
- Purl
- pkg:pypi/nova