CVE-2026-49299

neutron: In OpenStack Neutron before 28.0.1, the tagging controller enforces plural policy action names on single-tag write op...

CVE-2026-49299 is fixed in neutron on 1 platform, first by DEBIAN-CVE-2026-49299, released June 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
n/a
No vendor severity
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0030
22nd percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
neutron · Debian 13.5 (trixie) 2:26.0.0-9+deb13u1 DEBIAN-CVE-2026-49299 Jun 24, 2026
neutron · Debian 14 2:28.0.0-4 DEBIAN-CVE-2026-49299 Jun 24, 2026

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