Path traversal in rclone
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-639.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| rclone | rclone | before 1.74.4 | 1.74.4 | Patch available | CNA |
| — | github.com/rclone/rclone (Go) | before 1.74.4 | 1.74.4 | Patch available | GHSA-fqj9-69pf-6pjg |
- rclone Vendorrclone Affected before 1.74.4 Fixed in 1.74.4 Patch available CNA
- github.com/rclone/rclone (Go) Vendor— Affected before 1.74.4 Fixed in 1.74.4 Patch available GHSA-fqj9-69pf-6pjg
Remediation
- Fix · CNA rclone (rclone) Fixed in 1.74.4
- Fix · GHSA-fqj9-69pf-6pjg github.com/rclone/rclone (Go) Fixed in 1.74.4 Advisory →
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2026-59733
- 2026-10-03 Alias added: GHSA-fqj9-69pf-6pjg
References
Patch 2
More Rclone vulnerabilities
- TI-2026-60044 rclone serve s3: --auth-proxy without --auth-key authenticates nobody - full SigV4 signature bypass CVSS 3.1CRITICAL 9.8
- TI-2026-29802 RClone: Unauthenticated operations/fsinfo allows attacker-controlled backend instantiation and local command execution CVSS 4.0CRITICAL 9.2
- TI-2026-29799 Rclone: Unauthenticated options/set allows runtime auth bypass, leading to sensitive operations and command execution CVSS 4.0CRITICAL 9.2
- TI-2026-39407 rclone: Unvalidated symlink target in local `--links` — arbitrary file write from an untrusted remote CVSS 3.1HIGH 8.8
- TI-2026-80211 Authentication bypass in rclone serve webdav via OPTIONS requests CVSS 4.0MEDIUM 6.9
- TI-2026-80206 Integer overflow in rclone serve s3 lets attackers exhaust memory CVSS 4.0MEDIUM 6.9
Sources
- CVE-2026-59733 · CVE Program
- CVE-2026-59733 · NVD
- FIRST EPSS
- GHSA-fqj9-69pf-6pjg · GitHub Advisory Database · CC BY 4.0
- CVE-2026-59733 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences