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
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