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CVE-2026-93987

rclone serve docker Path Traversal via Volume Name

CVSS 4.0 4.6 MEDIUMCVSS 3.1 3.4 LOWCheck source for fixed versionsKEV status unknown
Original advisory

cve-program · CVE-2026-93987

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-93987

Published

rclone

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "rclone",
                    "product": "rclone",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:golang/github.com/rclone/rclone",
                    "versions": [
                        {
                            "version": "1.56.0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "1.75.1"
                        },
                        {
                            "version": "1.75.1",
                            "status": "unaffected",
                            "versionType": "semver"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

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Sources read 12 Nov 23:52 UTC · 273 of 275 readable · 271 fully read · documentation 469/469 current

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