# CVE-2020-14057: Path traversal in n/a

> Attackers can manipulate file paths to read or write arbitrary files, potentially achieving remote code execution in Monsta FTP deployments.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 1 Jul 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-689r-4r32-c586

## What is CVE-2020-14057?

CVE-2020-14057 is a critical path traversal vulnerability in n/a, published on 1 Jul 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Monsta FTP 2.10.1 or below allows external control of paths used in filesystem operations. This allows attackers to read and write arbitrary local files, allowing an attacker to gain remote code execution in common deployments.

Weakness: CWE-610 (Externally Controlled Reference to a Resource in Another Sphere)

## Which versions are affected by CVE-2020-14057?

It affects 1 product.


Products: Monstaftp Monsta Ftp.

## How do I fix CVE-2020-14057?

No fix has been published for CVE-2020-14057 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-14057 being exploited?

There is no known exploitation of CVE-2020-14057 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2022-27468](https://insights.sbomify.com/CVE-2022-27468/): File upload in n/a (critical 9.8)
- [CVE-2022-27469](https://insights.sbomify.com/CVE-2022-27469/): Server-side request forgery in n/a (critical 9.8)
- [CVE-2020-14056](https://insights.sbomify.com/CVE-2020-14056/): Server-side request forgery in n/a (critical 9.8)
- [CVE-2025-34299](https://insights.sbomify.com/CVE-2025-34299/): Monsta FTP <= 2.11 Unauthenticated Arbitrary File Upload (critical 9.3)
- [CVE-2020-14055](https://insights.sbomify.com/CVE-2020-14055/): Cross-site scripting in n/a (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-14057 and fix it if it is affected.

What it is: CVE-2020-14057 is a critical path traversal vulnerability in n/a, published on 1 Jul 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-14057 in the wild and no public exploit code.

Affected product: n/a. 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-2020-14057/ (Markdown: https://insights.sbomify.com/CVE-2020-14057/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-14057
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-14057
- OSV: https://osv.dev/vulnerability/CVE-2020-14057

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-14057/
Summaries are generated and may contain mistakes; the official description above is the record.