# CVE-2023-25955: XML external entity in National land numerical information data conversion tool

> An attacker can access arbitrary files on the PC by processing a specially crafted XML file using the National land numerical information data conversion tool.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 11 Apr 2023
- **Updated:** 10 Feb 2025
- **Also known as:** GHSA-77m5-rm2p-m2qh

## What is CVE-2023-25955?

CVE-2023-25955 is a medium-severity vulnerability in Ministry of Land, Infrastructure, Transport and Tourism, Japan National land numerical information data conversion tool, published on 11 Apr 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

National land numerical information data conversion tool all versions improperly restricts XML external entity references (XXE). By processing a specially crafted XML file, arbitrary files on the PC may be accessed by an attacker.

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

## Which versions are affected by CVE-2023-25955?

It affects 1 product.


Products: Mlit National Land Numerical Information Data Conversion Tool.

## How do I fix CVE-2023-25955?

No fix has been published for CVE-2023-25955 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-25955 being exploited?

There is no known exploitation of CVE-2023-25955 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-25955 and fix it if it is affected.

What it is: CVE-2023-25955 is a medium-severity vulnerability in Ministry of Land, Infrastructure, Transport and Tourism, Japan National land numerical information data conversion tool, published on 11 Apr 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-25955 in the wild and no public exploit code.

Affected product: Ministry of Land, Infrastructure, Transport and Tourism, Japan National land numerical information data conversion tool. 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-2023-25955/ (Markdown: https://insights.sbomify.com/CVE-2023-25955/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-25955
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-25955
- OSV: https://osv.dev/vulnerability/CVE-2023-25955

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-25955/
Summaries are generated and may contain mistakes; the official description above is the record.