---
id: "CVE-2026-116192"
kind: "vulnerability"
aliases: ["CVE-2026-116192"]
title: "rclone: unauthenticated SSRF via --rc-serve redirects requests and leaks headers"
severity: "high"
cvss: 8.2
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["backup", "netstorage", "package", "rclone", "self-hosted"]
not_affected_if: ["local-cli-only", "no-http-or-netstorage-remotes", "rc-serve-disabled"]
published_at: "2026-10-25T14:16:59+00:00"
first_seen_at: "2026-10-25T14:41:23+00:00"
updated_at: "2026-10-25T14:42:22+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-116192", "first_seen_at": "2026-10-25T14:41:23+00:00"}]
---

# rclone: unauthenticated SSRF via --rc-serve redirects requests and leaks headers

rclone versions from 1.37 before 1.74.2 let an unauthenticated attacker supply a double-slash root on an existing named remote through --rc-serve, redirecting HTTP and NetStorage backend requests to hosts the attacker chooses. The attacker can read responses, capture configured custom headers, or obtain valid NetStorage request signatures.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Run `rclone version` and confirm whether the version is earlier than `1.74.2`
- Check whether rclone is started with `--rc-serve` or `rcd` and reachable from untrusted networks
- Check whether the rclone config has `http` or `netstorage` remotes with custom headers

## Fix

- Upgrade rclone to `1.74.2` or later
- Until upgraded, stop running `--rc-serve` on networks that untrusted clients can reach

## Timeline

- 2026-10-25T14:41:23+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-116192

## From the sources

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.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_