# CVE-2023-46590: XML external entity in Siemens OPC UA Modelling Editor (SiOME)

> An attacker can exploit an XML external entity vulnerability in Siemens OPC UA Modelling Editor to read arbitrary files from the system.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Nov 2023
- **Updated:** 16 Dec 2025
- **Also known as:** GHSA-cj8x-q3v5-mmvx

## What is CVE-2023-46590?

CVE-2023-46590 is a high-severity vulnerability in Siemens OPC UA Modelling Editor (SiOME), published on 14 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability has been identified in Siemens OPC UA Modelling Editor (SiOME) (All versions < V2.8). Affected products suffer from a XML external entity (XXE) injection vulnerability. This vulnerability could allow an attacker to interfere with an application's processing of XML data and read arbitrary files in the system.

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

## Which versions are affected by CVE-2023-46590?

It affects 1 product.


Products: Siemens Siemens Opc Ua Modeling Editor.

## How do I fix CVE-2023-46590?

No fix has been published for CVE-2023-46590 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-46590 being exploited?

There is no known exploitation of CVE-2023-46590 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-46590 and fix it if it is affected.

What it is: CVE-2023-46590 is a high-severity vulnerability in Siemens OPC UA Modelling Editor (SiOME), published on 14 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-46590 in the wild and no public exploit code.

Affected product: Siemens OPC UA Modelling Editor (SiOME). 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-2023-46590/ (Markdown: https://insights.sbomify.com/CVE-2023-46590/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-46590
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-46590
- OSV: https://osv.dev/vulnerability/CVE-2023-46590

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-46590/
Summaries are generated and may contain mistakes; the official description above is the record.