CVE-2026-49299
OpenStack Neutron has an Incorrect Authorization issue
EPSS 0.29%
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.
How to fix CVE-2026-49299
To remediate CVE-2026-49299, upgrade the affected package to a fixed version below.
- PyPI/neutron—upgrade to 28.0.1 or later
- —upgrade to 26.0.4 or later
Is CVE-2026-49299 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- >= 28.0.0, < 28.0.1
- >= 26.0.0, < 26.0.4, >= 27.0.0, < 27.0.3, >= 28.0.0, < 28.0.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | 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 |