The operations/fsinfo remote control (RC) endpoint in rclone was registered without requiring authentication. This allowed unauthenticated callers to instantiate arbitrary backends via inline backend definitions, which could lead to local command execution if the backend configuration allows it (e.g., via bearertokencommand in webdav or ssh in sftp).
// cvss v3.1 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Checked 2026-10-01 at 00:01 UTC. The most recent advisory here was published 2026-08-11. Updated continuously from NVD, GHSA, OSV and CNA feeds.