# CVE-2026-59733: Rclone path traversal in serve restic private-repos

Source: https://junglewise.ai/threats/cve-2026-59733-rclone-path-traversal-in-serve-restic-private-repos  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-14. Updated: 2026-08-05  
License: CC BY 4.0 with a link back

CVE-2026-59733 · Severity: high · CVSS 8.8 · Published 2026-07-14

A security flaw in rclone's restic server mode allows one user to access another user's private backup files. Rclone is a tool used to manage and sync files across different storage providers. In multi-tenant setups where multiple users share the same server, an authenticated user can bypass isolation controls to read, modify, or delete the backup data of other customers.

Technologies: [github.com/rclone/rclone (Go)](https://junglewise.ai/threats/technologies/github-com-rclone-rclone), [Rclone](https://junglewise.ai/threats/technologies/rclone). Vendors: [Go](https://junglewise.ai/threats/vendors/go), [Rclone](https://junglewise.ai/threats/vendors/rclone).

## Quick answers

**Is CVE-2026-59733 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-59733 being exploited in the wild.

**How severe is CVE-2026-59733?** High severity, with a CVSS score of 8.8, published 14 July 2026.

**Which products and versions are affected?** github.com/rclone/rclone (Go) <= 1.74.3, SEMVER:introduced=0,fixed=1.74.4; Rclone < 1.74.4, <= 1.74.3.

**Is there a fix for CVE-2026-59733?** Yes. github.com/rclone/rclone (Go): upgrade to 1.74.4 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-59733 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-59733?** Check whether you run github.com/rclone/rclone (Go) or Rclone at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- github.com/rclone/rclone (Go): upgrade to 1.74.4 or later

  ```sh
  go get github.com/rclone/rclone@v1.74.4
  ```


## Technical details

An authorization bypass exists in `cmd/serve/restic/restic.go` when the `--private-repos` flag is used. The vulnerability is caused by a path desynchronization between two middlewares: `checkPrivate` validates the user based on a routed path segment, while `WithRemote` extracts the backend object path from the raw, uncanonicalized URL. By using path traversal sequences (e.g., `/me/../victim/`), an authenticated attacker can satisfy the authorization check for their own namespace while the backend resolves the final path to a different user's repository. This affects backends that perform POSIX-style path cleaning, such as SFTP, FTP, and the internal memory backend. The issue is addressed in version 1.74.4.

## Affected products

- rclone rclone <= 1.74.3

## Identifiers

- CVE-2026-59733
- GHSA-fqj9-69pf-6pjg
- GO-2026-6195

## Timeline

- 2026-07-08: disclosed
- 2026-08-05: advisory

## References

- [https://api.github.com/users/5ud0er](https://api.github.com/users/5ud0er)
- [https://github.com/5ud0er](https://github.com/5ud0er)
- [https://api.github.com/users/5ud0er/gists%7B/gist_id%7D](https://api.github.com/users/5ud0er/gists%7B/gist_id%7D)
- [https://api.github.com/users/5ud0er/repos](https://api.github.com/users/5ud0er/repos)
- [https://avatars.githubusercontent.com/u/88728909?v=4](https://avatars.githubusercontent.com/u/88728909?v=4)
- [https://api.github.com/users/5ud0er/events%7B/privacy%7D](https://api.github.com/users/5ud0er/events%7B/privacy%7D)

## Related threats

- [Rclone B2 backend credential exposure on HTTP redirects](https://junglewise.ai/threats/cve-2026-116196-rclone-before-v1-75-2-contains-a-credential-exposure)
- [Rclone path traversal in translateLink function](https://junglewise.ai/threats/cve-2026-116195-rclone-before-1-75-2-contains-a-path-traversal-vulnerability-in)
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- [Rclone serve webdav authentication bypass via OPTIONS requests](https://junglewise.ai/threats/cve-2026-116193-rclone-from-1-64-0-before-1-75-2-contains-an-authentication)
- [rclone server-side request forgery via --rc-serve scheme-relative roots](https://junglewise.ai/threats/cve-2026-116192-rclone-from-1-37-before-1-74-2-contains-a-server-side-request)