# CVE-2024-28198: XML external entity (XXE) injection in OpenOLAT


- **Severity:** Medium 4.6 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 11 Mar 2024
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-pqvm-h9mg-434c

## What is CVE-2024-28198?

CVE-2024-28198 is a medium-severity vulnerability in OpenOLAT, published on 11 Mar 2024. 

### Official description

OpenOlat is an open source web-based e-learning platform for teaching, learning, assessment and communication. By manually manipulating http requests when using the draw.io integration it is possible to read arbitrary files as the configured system user and SSRF. The problem is fixed in version 18.1.6 and 18.2.2. It is advised to upgrade to the latest version of 18.1.x or 18.2.x. Users unable to upgrade may work around this issue by disabling the Draw.io module or the entire REST API which will secure the system.

Weakness: CWE-611 (Improper Restriction of XML External Entity Reference)

## Which versions are affected by CVE-2024-28198?

It affects 1 product.


Products: Frentix Openolat.

## How do I fix CVE-2024-28198?

No fix has been published for CVE-2024-28198 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-28198 being exploited?

There is no known exploitation of CVE-2024-28198 in the wild and no public exploit code.

## Other vulnerabilities in OpenOLAT

- [CVE-2026-31946](https://insights.sbomify.com/CVE-2026-31946/): OpenOLAT: Authentication bypass via forged JWT in OIDC implicit flow (critical 9.8)
- [CVE-2026-28228](https://insights.sbomify.com/CVE-2026-28228/): OpenOLAT: Server-Side Template Injection (SSTI) in Velocity templates allows Remote Code Execution (high 8.8)
- [CVE-2021-39181](https://insights.sbomify.com/CVE-2021-39181/): Unsafe Deserialization of User Data Using XStream (high 8.8)
- [CVE-2021-41242](https://insights.sbomify.com/CVE-2021-41242/): Path Traversal in some REST methods leading to file upload to arbitrary places (high 8.1)
- [CVE-2021-39180](https://insights.sbomify.com/CVE-2021-39180/): Path Traversal in Archive Handling Leading to Code Execution (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-28198 and fix it if it is affected.

What it is: CVE-2024-28198 is a medium-severity vulnerability in OpenOLAT, published on 11 Mar 2024. 
Exploitation: There is no known exploitation of CVE-2024-28198 in the wild and no public exploit code.

Affected product: OpenOLAT. 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-2024-28198/ (Markdown: https://insights.sbomify.com/CVE-2024-28198/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-28198
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-28198
- OSV: https://osv.dev/vulnerability/CVE-2024-28198

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-28198/
Summaries are generated and may contain mistakes; the official description above is the record.