HIGH

CVE-2026-55707

2026-08-05 CVSS v4.0

CVSS

7.1

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.

Weakness (CWE)

CWE-863 Incorrect Authorization

EPSS Score

0.28%

Probability of exploitation in next 30 days

21.2th percentile

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 https://lists.debian.org/debian-lts-announce/2026/08/msg00024.html

View on dbcve.org

Base CVE data derived from NVD (public domain). Enrichment by dbcve.org (CC-BY-4.0). Fetched via API.

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