---
title: "CVE-2026-71309\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2026-71309?format=md
keywords: index, follow
---

# CVE-2026-71309

Publication date 5 August 2026

Last updated 14 August 2026

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

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## Description

rclone is a command-line program to sync files and directories to and from
different cloud storage providers. From 1.40.0 until 1.75.0, rclone serve
restic does not correctly reject URL paths beginning with ../ in
cmd/serve/restic/restic.go WithRemote, which accepts a leading parent path
and passes it to GET, HEAD, POST, and DELETE handlers for configured
backends including WebDAV, FTP, HTTP, Memory, and SFTP. An attacker who can
access the REST endpoint may read, create, overwrite, or delete objects
outside the path configured by the operator when the operator publishes a
backend subdirectory and the backend credential can access parent or
sibling objects. This issue is fixed in 1.75.0.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| rclone | 26.04 LTS resolute | Needs evaluation |
| 24.04 LTS noble | Needs evaluation |
| 22.04 LTS jammy | Needs evaluation |
| 20.04 LTS focal | Needs evaluation |
| 18.04 LTS bionic | Needs evaluation |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v4.0

**Base score**

8.6 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Attack requirements | None |
  | Privileges required | Low |
  | User interaction | None |
  | Vulnerable system - Confidentiality impact | High |
  | Vulnerable system - Integrity impact | High |
  | Vulnerable system - Availability impact | None |
  | Subsequent system - Confidentiality impact | None |
  | Subsequent system - Integrity impact | None |
  | Subsequent system - Availability impact | None |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 8.6 · High |
  | Base + Threat score | - |
  | Base + Environmental score | - |
  | Base + Threat + Environmental score | - |

**Vector:** 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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-71309)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-71309)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2026-71309)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2026-71309)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2026-71309>
* <https://github.com/rclone/rclone/security/advisories/GHSA-45pq-889g-fcgh>
* <https://github.com/rclone/rclone/commit/cc5a189f00efe68ed0ddb32d3237b42549a9f264>
* <https://github.com/rclone/rclone/releases/tag/v1.75.0>