# CVE-2023-38306: Cross-site scripting in n/a

> Attackers can bypass file upload restrictions in Webmin to inject malicious scripts, potentially leading to code execution or security bypass.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 31 Jul 2023
- **Updated:** 22 Oct 2024
- **Also known as:** GHSA-393c-4g2g-74rm

## What is CVE-2023-38306?

CVE-2023-38306 is a medium-severity cross-site scripting vulnerability in Webmin Webmin, published on 31 Jul 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

An issue was discovered in Webmin 2.021. A Cross-site Scripting (XSS) Bypass vulnerability was discovered in the file upload functionality. Normally, the application restricts the upload of certain file types such as .svg, .php, etc., and displays an error message if a prohibited file type is detected. However, by following certain steps, an attacker can bypass these restrictions and inject malicious code.

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

## Which versions are affected by CVE-2023-38306?

It affects 1 product.


Products: Webmin Webmin.

## How do I fix CVE-2023-38306?

No fix has been published for CVE-2023-38306 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-38306 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-38306 exists.

## Other vulnerabilities in Webmin Webmin

- [CVE-2019-15107](https://insights.sbomify.com/CVE-2019-15107/): Webmin Command Injection (critical 9.8, exploited in the wild)
- [CVE-2002-2201](https://insights.sbomify.com/CVE-2002-2201/): Command injection in n/a (critical 10.0)
- [CVE-2001-1196](https://insights.sbomify.com/CVE-2001-1196/): Path traversal in n/a (critical 10.0)
- [CVE-2024-12828](https://insights.sbomify.com/CVE-2024-12828/): Webmin CGI Command Injection Remote Code Execution Vulnerability (critical 9.9)
- [CVE-2022-36446](https://insights.sbomify.com/CVE-2022-36446/): Cross-site scripting in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-38306 and fix it if it is affected.

What it is: CVE-2023-38306 is a medium-severity cross-site scripting vulnerability in Webmin Webmin, published on 31 Jul 2023. An attacker can exploit it over the internet without logging in, 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-2023-38306 exists.

Affected product: Webmin Webmin. 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-2023-38306/ (Markdown: https://insights.sbomify.com/CVE-2023-38306/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-38306
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-38306
- OSV: https://osv.dev/vulnerability/CVE-2023-38306

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-38306/
Summaries are generated and may contain mistakes; the official description above is the record.