Path traversal in rclone - #VU140645
Published: August 1, 2026
Vulnerability identifier: #VU140645
CSH Severity: Medium
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to access, create, overwrite, or delete objects outside the configured backend root.
The vulnerability exists due to path traversal in WithRemote middleware in cmd/serve/restic/restic.go when handling crafted REST endpoint paths beginning with ../. A remote user can send a specially crafted request to access, create, overwrite, or delete objects outside the configured backend root.
Exploitation requires access to the REST endpoint, a published backend subdirectory, and backend credentials with access to parent or sibling objects; the exact effects depend on backend path semantics.
Affected software
rclone
Remediation
Install security update from vendor's website.
rclone - update to 1.75.0