CVE-2026-59733 rclone `serve restic --private-repos` authorization bypass: `..` in the URL path lets an authenticated user read, overwrite and delete other users' repositories
Authenticated users can bypass private repository restrictions via path traversal to read, modify, or delete other users' data in rclone serve restic.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-59733?
CVE-2026-59733 is a high-severity path traversal vulnerability in rclone, published on 14 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Rclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to 1.74.4, rclone serve restic --private-repos enforces authorization using the routed user path segment while building the backend object key from the raw uncleaned URL path, allowing an authenticated user to include .. in a request such as //..//config and read, overwrite, or delete another user's private repository on backends that clean path components. This issue is fixed in version 1.74.4.
Which versions are affected by CVE-2026-59733?
4 open source packages ship an affected version, including github.com/rclone/rclone and rclone. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/rclone/rclone Go | All versions | 1.74.4 |
github.com/rclone/rclone Go | All versions | 1.74.4 |
github.com/rclone/rclone Go | All versions | 1.74.4 |
rclone Bitnami | All versions | 1.74.4 |
Products include Rclone Rclone.
How do I fix CVE-2026-59733?
Upgrade github.com/rclone/rclone to 1.74.4 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-59733 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-59733 exists.
Other vulnerabilities in rclone
- CVE-2026-88018 rclone serve s3: --auth-proxy without --auth-key authenticates nobody - full SigV4 signature bypass
- CVE-2026-49980 Rclone: Unauthenticated command execution in `rclone rcd --rc-serve` via inline remote instantiation, bypassing CVE-2026-41179 fix
- CVE-2026-41179 RClone: Unauthenticated operations/fsinfo allows attacker-controlled backend instantiation and local command execution
- CVE-2026-41176 Rclone: Unauthenticated options/set allows runtime auth bypass, leading to sensitive operations and command execution
- CVE-2026-116191 Rclone before 1.75.2 Path Traversal via serve webdav MKCOL
Sources
Also known as BIT-rclone-2026-59733, DEBIAN-CVE-2026-59733, GHSA-fqj9-69pf-6pjg, GO-2026-6195, MINI-2q65-vhgr-3g79, MINI-cpg4-7prg-hm8j and 6 more.