copyparty vulnerabilities

The copyparty file server software prior to version 1.8.7 contains a reflected XSS vulnerability via URL parameters `?k304=...` and `?setck=...`. This can lead to moving or deleting existing files on the server, as well as uploading new files using the account of the person who clicks the malicious link.

Copyparty is a portable file server that is vulnerable to a path traversal attack in the `.cpr` subfolder in versions prior to 1.8.2. This attack allows access to files, directories, and commands outside the web document root directory.

copyparty is a portable file server. Prior to 1.20.19, FTP upload path handling does not confine destinations to configured copyparty volumes. When FTP or FTPS is explicitly enabled, a low-privileged authenticated user can submit traversal paths during upload to create a new file outside configured volumes wherever the copyparty process has write permission.

copyparty contains a volume restriction bypass vulnerability in its SFTP front end that allows authenticated SFTP users to create, remove, and truncate arbitrary paths outside permitted volume boundaries by exploiting three handlers that bypass the xvol volflag enforcement.

Copyparty is a portable file server. Prior to 1.20.17, copyparty volumes with the dk or dks directory-key flag combined with the fk or fka file-key flag can convert a valid file key into a directory key, granting read access to the containing folder. This vulnerability was only reachable if both types of keys (filekeys and dirkeys) were manually enabled in the volume flags simultaneously. This issue is fixed in version 1.20.17.