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.
26.0.026.0.126.0.226.0.327.0.027.0.127.0.228.0.026.0.427.0.328.0.1Exploitability
AV:NAC:LAT:NPR:LUI:NVulnerable System
VC:NVI:LVA:NSubsequent System
SC:NSI:NSA:NCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N