CVE-2026-54572

### Summary With `-l/--links`, rclone serializes symlinks as `<name>.rclonelink` text objects whose body is the link target. When rclone writes such an object to a local destination, it recreates the symlink with `os.Symlink(<object body>, <dest path>)` and performs NO validation of the target. If the source is attacker-controlled, the attacker sets the body to any absolute or `../` path, so rclone plants a symlink inside the destination that points anywhere on the victim's filesystem. Because a