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.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49299.json",
"cna_assigner": "mitre",
"cwe_ids": [
"CWE-863"
]
}{
"source": "AFFECTED_FIELD",
"extracted_events": [
{
"introduced": "26.0.0"
},
{
"fixed": "26.0.4"
},
{
"introduced": "27.0.0"
},
{
"fixed": "27.0.3"
},
{
"introduced": "28.0.0"
},
{
"fixed": "28.0.1"
}
]
}