# CVE-2025-5171: llisoft MTA Maita Training System OpenController.java this.fileService.download unrestricted upload

> Remote attackers can exploit unrestricted file upload in the MTA Maita Training System to potentially execute arbitrary code.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 May 2025
- **Updated:** 28 May 2025
- **Also known as:** GHSA-wcrv-5jp3-rmqr

## What is CVE-2025-5171?

CVE-2025-5171 is a medium-severity vulnerability in llisoft MTA Maita Training System, published on 26 May 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability, which was classified as critical, has been found in llisoft MTA Maita Training System 4.5. This issue affects the function this.fileService.download of the file com\llisoft\controller\OpenController.java. The manipulation of the argument url leads to unrestricted upload. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type), CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2025-5171?

It affects 1 product.


Products: Llisoft Mta Maita Training System.

## How do I fix CVE-2025-5171?

No fix has been published for CVE-2025-5171 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-5171 being exploited?

There is no known exploitation of CVE-2025-5171 in the wild and no public exploit code.

## Other vulnerabilities in llisoft MTA Maita Training System

- [CVE-2025-5170](https://insights.sbomify.com/CVE-2025-5170/): llisoft MTA Maita Training System AdminShitiController.java AdminShitiListRequestVo sql injection (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-5171 and fix it if it is affected.

What it is: CVE-2025-5171 is a medium-severity vulnerability in llisoft MTA Maita Training System, published on 26 May 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-5171 in the wild and no public exploit code.

Affected product: llisoft MTA Maita Training System. 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-2025-5171/ (Markdown: https://insights.sbomify.com/CVE-2025-5171/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-5171
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-5171
- OSV: https://osv.dev/vulnerability/CVE-2025-5171

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-5171/
Summaries are generated and may contain mistakes; the official description above is the record.