# CVE-2026-48711: SSHFS: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

> Attackers can execute arbitrary commands locally by injecting options into SSHFS mount sources when specific sftp_server configurations are used.

- **Severity:** High 7.0 (`CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 19 Aug 2026
- **Updated:** 20 Aug 2026
- **Also known as:** ALPINE-CVE-2026-48711, AZL-97014, DEBIAN-CVE-2026-48711, GHSA-mm85-q63v-4476, UBUNTU-CVE-2026-48711

## What is CVE-2026-48711?

CVE-2026-48711 is a high-severity command injection vulnerability in libfuse sshfs, published on 19 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

SSHFS is a network filesystem client for connecting to SSH servers. From version 1.4 until 3.7.6, SSHFS accepts a bracketed mount source such as [-oProxyCommand=CMD]:/path and find_base_path() removes the brackets, leaving a host value that begins with - and is passed directly to ssh as a command-line argument. When a caller also supplies a path-valued sftp_server, ssh treats the normalized host as an option and the server path as its destination, causing an injected ProxyCommand to execute locally before any connection or authentication succeeds. The attack requires a caller or wrapper that passes an attacker-controlled mount source to SSHFS with the required sftp_server configuration and results in arbitrary command execution as the user running SSHFS. This issue is fixed in version 3.7.6.

Weakness: CWE-88 (Improper Neutralization of Argument Delimiters in a Command)

## Which versions are affected by CVE-2026-48711?


## How do I fix CVE-2026-48711?

Upgrade to a fixed version.

## Is CVE-2026-48711 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-48711 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-48711 and fix it if it is affected.

What it is: CVE-2026-48711 is a high-severity command injection vulnerability in libfuse sshfs, published on 19 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-48711 exists.

Affected product: libfuse sshfs. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-48711/ (Markdown: https://insights.sbomify.com/CVE-2026-48711/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-48711
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-48711
- OSV: https://osv.dev/vulnerability/CVE-2026-48711

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-48711/
Summaries are generated and may contain mistakes; the official description above is the record.