CVE-2026-49299
published 2026-05-28CVE-2026-49299: 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…
PriorityP431medium5.3CVSS 4.0
AVNACLATNPRLUINVCNVILVANSCNSINSANEXCRXIRXARXMAVXMACXMATXMPRXMUIXMVCXMVIXMVAXMSCXMSIXMSAXSXAUXRXVXREXUX
EPSS
0.29%
21.1th 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.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| openstack | neutron | >= 26.0.0 < 26.0.4 | 26.0.4 |
| openstack | neutron | >= 27.0.0 < 27.0.3 | 27.0.3 |
| openstack | neutron | >= 28.0.0 < 28.0.1 | 28.0.1 |
| the_openstack_project | openstack-neutron | — | — |
CVSS provenance
nvdv4.05.3MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vendor_redhat5.3MEDIUM
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GHSA
GHSA-xv24-hxh9-2hh9: In OpenStack Neutron before 28
ghsa_unreviewed·2026-05-29
CVE-2026-49299 [MEDIUM] CWE-863 GHSA-xv24-hxh9-2hh9: In OpenStack Neutron before 28
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.
Red Hat
openstack-neutron: OpenStack Neutron: Unauthorized tag modification due to policy enforcement mismatch
vendor_redhat·2026-05-28·CVSS 5.3
CVE-2026-49299 [MEDIUM] CWE-425 openstack-neutron: OpenStack Neutron: Unauthorized tag modification due to policy enforcement mismatch
openstack-neutron: OpenStack Neutron: Unauthorized tag modification due to policy enforcement mismatch
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.
A flaw was found in OpenStack Neutron. The tagging controller incorrectly enforces plural policy action names for single-tag write operations, while the defined policy rules use singular names. This mismatch allows a project reader to bypass intended policy restrictions, enabling them to create and update tags
No detection rules found.
No public exploits indexed.
2026-05-28
Published