CVE-2026-93353 copyparty SFTP Volume Restriction Bypass via mkdir/rmdir/chattr Handlers

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. The mkdir, rmdir, and...

CVE-2026-93353

The copyparty SFTP front end contains a volume restriction bypass vulnerability. Authenticated SFTP users can exploit three specific handlers—_mkdir , _rmdir , and _chattr —to bypass xvol volflag enforcement. The root cause is that these handlers construct destination paths using vfs.get(), vn.ca...

CVE-2026-93353: Improper Link Resolution Before File Access

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. The mkdir, rmdir, and...