Bug 2539342 - CVE-2026-93987 rclone: rclone: Path Traversal in Docker Volume Plugin [fedora-all]
Summary: CVE-2026-93987 rclone: rclone: Path Traversal in Docker Volume Plugin [fedora...
Keywords:
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: rclone
Version: rawhide
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Mikel Olasagasti Uranga
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["a34e3131-4f3c-4a78-8bd4-7...
Depends On:
Blocks: CVE-2026-93987
TreeView+ depends on / blocked
 
Reported: 2026-09-23 11:12 UTC by Vladimir Vasilev
Modified: 2026-09-23 11:12 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:


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Description Vladimir Vasilev 2026-09-23 11:12:26 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

rclone versions 1.56.0 through 1.75.0 contain a path traversal vulnerability in the `rclone serve docker` volume plugin. newVolume() in cmd/serve/docker/volume.go computes a volume's mountpoint as filepath.Join(drv.root, name) from the attacker-supplied `name` field of a Docker VolumeDriver.Create request without verifying that the result stays within drv.root (default /var/lib/docker-volumes/rclone), and checkMountpoint() then creates that directory with file.MkdirAll before mounting. A volume name containing enough `..` components (e.g. "../../../../../../etc") therefore resolves outside the base directory, allowing anyone able to submit a VolumeDriver.Create request to the plugin socket — normally the Docker daemon, or a workload that can request named volumes in a multi-tenant orchestration setup — to make the privileged rclone plugin process create a directory and mount a remote filesystem specified in the same request at an arbitrary host path, shadowing or disrupting system directories. The advisory notes Volume.restoreState() had the same missing validation when reloading persisted volume state. Fixed in 1.75.1.


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