# CVE-2023-50366: QTS, QuTS hero

> Authenticated administrators can inject malicious code via XSS in QNAP QTS and QuTS hero operating systems, potentially leading to code execution.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 6 Sep 2024
- **Updated:** 6 Sep 2024
- **Also known as:** GHSA-mq59-j27v-h664

## What is CVE-2023-50366?

CVE-2023-50366 is a medium-severity cross-site scripting vulnerability in Qnap Qts, published on 6 Sep 2024. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

A cross-site scripting (XSS) vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow authenticated administrators to inject malicious code via a network.

We have already fixed the vulnerability in the following versions:
QTS 5.1.6.2722 build 20240402 and later
QuTS hero h5.1.6.2734 build 20240414 and later

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2023-50366?

It affects 2 products.


Products: Qnap Qts, Qnap Quts Hero.

## How do I fix CVE-2023-50366?

No fix has been published for CVE-2023-50366 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-50366 being exploited?

There is no known exploitation of CVE-2023-50366 in the wild and no public exploit code.

## Other vulnerabilities in Qnap Qts

- [CVE-2020-2509](https://insights.sbomify.com/CVE-2020-2509/): QNAP Network-Attached Storage (NAS) Command Injection (critical 9.8, exploited in the wild)
- [CVE-2018-19949](https://insights.sbomify.com/CVE-2018-19949/): QNAP NAS File Station Command Injection (critical 9.8, exploited in the wild)
- [CVE-2019-7193](https://insights.sbomify.com/CVE-2019-7193/): QNAP QTS Improper Input Validation (critical 9.8, exploited in the wild)
- [CVE-2018-19943](https://insights.sbomify.com/CVE-2018-19943/): QNAP NAS File Station Cross-Site Scripting (high 8.0, exploited in the wild)
- [CVE-2018-19953](https://insights.sbomify.com/CVE-2018-19953/): QNAP NAS File Station Cross-Site Scripting (medium 6.1, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-50366 and fix it if it is affected.

What it is: CVE-2023-50366 is a medium-severity cross-site scripting vulnerability in Qnap Qts, published on 6 Sep 2024. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-50366 in the wild and no public exploit code.

Affected product: Qnap Qts. 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-2023-50366/ (Markdown: https://insights.sbomify.com/CVE-2023-50366/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-50366
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-50366
- OSV: https://osv.dev/vulnerability/CVE-2023-50366

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-50366/
Summaries are generated and may contain mistakes; the official description above is the record.