# CVE-2025-2031: ChestnutCMS upload uploadFile unrestricted upload

> Attackers can upload malicious files via the uploadFile function in ChestnutCMS, potentially leading to remote code execution.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 Mar 2025
- **Updated:** 6 Mar 2025
- **Also known as:** GHSA-j7g6-76w3-j7qf

## What is CVE-2025-2031?

CVE-2025-2031 is a medium-severity vulnerability in ChestnutCMS, published on 6 Mar 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability classified as critical has been found in ChestnutCMS up to 1.5.2. This affects the function uploadFile of the file /dev-api/cms/file/upload. The manipulation of the argument file leads to unrestricted upload. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation), CWE-434 (Unrestricted Upload of File with Dangerous Type), CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2025-2031?

It affects 1 product.


Products: 1000mz Chestnutcms.

## How do I fix CVE-2025-2031?

No fix has been published for CVE-2025-2031 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-2031 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-2031 exists.

## Other vulnerabilities in ChestnutCMS

- [CVE-2024-57450](https://insights.sbomify.com/CVE-2024-57450/): File upload in n/a (critical 9.8)
- [CVE-2024-56828](https://insights.sbomify.com/CVE-2024-56828/): File upload in n/a (critical 9.8)
- [CVE-2024-57451](https://insights.sbomify.com/CVE-2024-57451/): Path traversal in n/a (high 7.5)
- [CVE-2024-57452](https://insights.sbomify.com/CVE-2024-57452/): Path traversal in n/a (high 7.5)
- [CVE-2025-70073](https://insights.sbomify.com/CVE-2025-70073/): Code injection in n/a (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-2031 and fix it if it is affected.

What it is: CVE-2025-2031 is a medium-severity vulnerability in ChestnutCMS, published on 6 Mar 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-2031 exists.

Affected product: ChestnutCMS. 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-2025-2031/ (Markdown: https://insights.sbomify.com/CVE-2025-2031/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-2031
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-2031
- OSV: https://osv.dev/vulnerability/CVE-2025-2031

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-2031/
Summaries are generated and may contain mistakes; the official description above is the record.