CVE-2026-49299
Medium
Description
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.
SeverityMedium
CVSS5.3
Exploit probability—
ProductNeutron
PublishedMay 28, 2026
First seenMay 28, 2026
Weakness typeCWE-863Incorrect authorization
How to fix
Update
- neutron28.0.1, 27.0.3, 26.0.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| neutronPyPI | 28.0.0 ≤ v < 28.0.1, 27.0.0 ≤ v < 27.0.3, 26.0.0 ≤ v < 26.0.4 | 28.0.1, 27.0.3, 26.0.4 |
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