CVE-2026-49299 MEDIUM

CVE-2026-49299

Vendor Openstack
Product Neutron
Weakness CWE-863 · Incorrect authorization
Published May 28, 2026
Last update June 2, 2026

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

In OpenStack Neutron before 28.0.1, the tagging controller enforces plural policy action names on single-tag write operations while the defined policy rules use singular names. The mismatched names evaluate as allowed under the default policy, permitting a project reader to create and update tags on same-project resources. Deployments running Neutron 26.0.0 or later are affected.

Key dates

02Disclosure timeline

May 28, 2026 CVE published
June 2, 2026 Record updated