Vulnerability Description
In OpenStack Neutron before 28.0.2, the subnetpool onboarding API does not verify ownership of the target subnets. An authenticated user can onboard subnets from another project's shared network into their own subnetpool, mutating the victim's subnet state and altering L3 routing and address scope behavior for victim routers.
Related Weaknesses (CWE)
References
- https://launchpad.net/bugs/2152113
- https://security.openstack.org/ossa/OSSA-2026-032.html
- https://www.openwall.com/lists/oss-security/2026/07/29/5
- http://www.openwall.com/lists/oss-security/2026/07/29/5
FAQ
What is CVE-2026-55707?
CVE-2026-55707 is a documented vulnerability. In OpenStack Neutron before 28.0.2, the subnetpool onboarding API does not verify ownership of the target subnets. An authenticated user can onboard subnets from another project's shared network into ...
How severe is CVE-2026-55707?
CVSS scoring is not yet available for CVE-2026-55707. Check NVD for updates.
Is there a patch for CVE-2026-55707?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.