Description
rclone from 1.37 before 1.74.2 contains a server-side request forgery vulnerability that allows unauthenticated attackers to redirect http and netstorage backend requests by supplying a double-slash root on an existing named remote via --rc-serve. Attackers can make HEAD/GET requests to attacker-chosen hosts to read responses, capture configured custom headers, or obtain valid NetStorage request signatures.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| rclone | rclone | 1.37 – < 1.74.2 | 1.74.2 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 13 | rclone | No fix yet | — |
| Debian 12 | rclone | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | rclone | No fix yet | — |
| Ubuntu 18.04 LTS | rclone | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 26.04 LTS | rclone | No fix yet | — |
| Ubuntu Pro 24.04 LTS | rclone | No fix yet | — |
| Ubuntu Pro 22.04 LTS | rclone | No fix yet | — |
| Ubuntu Pro 20.04 LTS | rclone | No fix yet | — |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | rclone | 1.75.2-r0 | — |
Advisories 1
- WID-SEC-2026-4156 rclone: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 9, 2026
References
- GitHub Security Advisory (GHSA-xqmq-v4wj-rw5m) vendor-advisory
- VulnCheck Advisory: rclone from 1.37 before 1.74.2 SSRF via --rc-serve scheme-relative remote roots third-party-advisory