Jellystat is a free and open source Statistics App for Jellyfin. In affected versions Jellystat is directly using a user input in the route(s). This can lead to Path Traversal Vulnerabilities. Since this functionality is only for admin(s), there is very little scope for abuse. However, the `DELETE` `files/:filename` can be used to delete any file. This issue has been addressed in version 1.1.3. Users are advised to upgrade. There are no known workarounds for this vulnerability.
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.