CVE-2026-49299
mediumpriority · track · 0OT risk · elevatedEPSS 0.003 · 22 %ileEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 1.3–5.3
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (6)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- GHSA-xv24-hxh9-2hh9OpenStack Neutron has an Incorrect Authorization issue2026-05-29ghsa · osvUS
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.
- PYSEC-2026-2678OpenStack Neutron has an Incorrect Authorization issue2026-07-13vendor · osvUS
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.
also known as (6)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (12)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2026-49299cnnvd
- https://bugs.launchpad.net/bugs/2150132cnnvd
- https://opendev.org/openstack/neutronPatchcnnvd
- https://review.opendev.org/c/openstack/neutron/+/989099cnnvd
- https://www.openwall.com/lists/oss-security/2026/05/28/8cnnvd
- https://bugs.launchpad.net/bugs/2150132enisa_euvd
- https://review.opendev.org/c/openstack/neutron/+/989099enisa_euvd
- https://www.openwall.com/lists/oss-security/2026/05/28/8enisa_euvd
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