# CVE-2024-28147: Unrestricted Upload of Files in edu-sharing

> Authenticated attackers can upload malicious HTML or SVG files to trigger stored XSS or DoS via preview images in edu-sharing.

- **Severity:** High 7.4 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H`)
- **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:** 20 Jun 2024
- **Updated:** 13 Feb 2025
- **Also known as:** GHSA-c87f-rj58-gx9p

## What is CVE-2024-28147?

CVE-2024-28147 is a high-severity vulnerability in metaVentis GmbH edu-sharing, published on 20 Jun 2024. 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 authenticated user can upload arbitrary files in the upload 
function for collection preview images. An attacker may upload an HTML 
file that includes malicious JavaScript code which will be executed if a
 user visits the direct URL of the collection preview image (Stored 
Cross Site Scripting). It is also possible to upload SVG files that 
include nested XML entities. Those are parsed when a user visits the 
direct URL of the collection preview image, which may be utilized for a 
Denial of Service attack.

This issue affects edu-sharing: <8.0.8-RC2, <8.1.4-RC0, <9.0.0-RC19.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type)

## Which versions are affected by CVE-2024-28147?


## How do I fix CVE-2024-28147?

No fix has been published for CVE-2024-28147 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-28147 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-28147 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-28147 and fix it if it is affected.

What it is: CVE-2024-28147 is a high-severity vulnerability in metaVentis GmbH edu-sharing, published on 20 Jun 2024. 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-2024-28147 exists.

Affected product: metaVentis GmbH edu-sharing. 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-2024-28147/ (Markdown: https://insights.sbomify.com/CVE-2024-28147/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-28147
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-28147
- OSV: https://osv.dev/vulnerability/CVE-2024-28147

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-28147/
Summaries are generated and may contain mistakes; the official description above is the record.