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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-50266 Detail

Description

In OpenStack Neutron before 28.0.1, a project manager can create or update a port on a shared network owned by another project and set device_owner to a value that has "network:" at the beginning ("network:dhcp" for example). The default port RBAC policies incorrectly included PROJECT_MANAGER without requiring network ownership, allowing any project manager to obtain trusted network-service port behavior on shared networks. Depending on backend and deployment, this can bypass anti-spoofing and security group protections, enabling DHCP, MAC, or IP spoofing against other tenants on the shared network. This is a regression of CVE-2015-5240 (OSSA-2015-018).


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://bugs.launchpad.net/neutron/+bug/2152115 CISA-ADP
https://launchpad.net/bugs/2152115 MITRE
https://review.opendev.org/990273 MITRE
https://review.opendev.org/990353 MITRE
https://review.opendev.org/990356 MITRE
https://www.openwall.com/lists/oss-security/2026/06/04/6 MITRE

Weakness Enumeration

CWE-ID CWE Name Source
CWE-863 Incorrect Authorization MITRE  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-50266
NVD Published Date:
06/04/2026
NVD Last Modified:
06/04/2026
Source:
MITRE