rclone archive/zip: Zip Slip via unsanitized zip entry names lets a malicious archive escape its own namespace
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Partial Red Hat: 2 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat.
Summary
rclone is a command-line program to sync files and directories to and from different cloud storage providers. From 1.72.0 until 1.75.1, the archive ZIP backend method (*Fs).readZip in backend/archive/zip/zip.go accepts archive/zip.File.Name values from an untrusted central directory and exposes cleaned entry names without ensuring that they remain inside the archive namespace. Entries such as ../../etc/cron.d/evil can survive path.Clean and become Object.Remote() values that fs/sync and fs/operations use as destination-relative paths, allowing rclone copy or sync to write outside the selected destination on backends that do not independently confine the path. The non-empty root check also used strings.HasPrefix without a path boundary, so root foo could incorrectly include sibling foobar entries. This issue is fixed in version 1.75.1.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
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 | 1.72.0 to before 1.75.1 | 1.75.1 | Patch available | CNA |
| — | github.com/rclone/rclone (Go) | 1.72.0 to before 1.75.1 | 1.75.1 | Patch available | GHSA-66hp-wgxq-6f5q |
- rclone Vendorrclone Affected 1.72.0 to before 1.75.1 Fixed in 1.75.1 Patch available CNA
- github.com/rclone/rclone (Go) Vendor— Affected 1.72.0 to before 1.75.1 Fixed in 1.75.1 Patch available GHSA-66hp-wgxq-6f5q
Remediation
- Fix · CNA rclone (rclone) Fixed in 1.75.1
- Fix · GHSA-66hp-wgxq-6f5q github.com/rclone/rclone (Go) Fixed in 1.75.1 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Cryostat 4 | Affected | No fix yet: Fix deferred |
| Red Hat Advanced Cluster Management for Kubernetes 2 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-88014
- 2026-10-03 Alias added: GHSA-66hp-wgxq-6f5q
References
Patch 2
Advisory 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-2026-42602 Path traversal in rclone CVSS 3.1HIGH 8.8
- 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
Sources
- CVE-2026-88014 · CVE Program
- CVE-2026-88014 · NVD
- FIRST EPSS
- GHSA-66hp-wgxq-6f5q · GitHub Advisory Database · CC BY 4.0
- CVE-2026-88014 · 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