Umbraco CMS 8.5.3 allows an authenticated file upload (and consequently Remote Code Execution) via the Install Package functionality.
{
"cwe_ids": [
"CWE-434"
],
"github_reviewed": true,
"github_reviewed_at": "2021-05-04T21:16:07Z",
"nvd_published_at": "2020-03-16T20:15:00Z",
"severity": "MODERATE"
}