This affects all versions up to and including version 0.8.1 of package marked-tree. There is no path sanitization in the path provided at fs.readFile in index.js.
{ "nvd_published_at": "2020-07-25T09:15:00Z", "github_reviewed_at": "2021-05-06T18:59:36Z", "severity": "HIGH", "github_reviewed": true, "cwe_ids": [ "CWE-22" ] }