# CVE-2023-4827: File Manager Pro < 1.8 - Remote Code Execution via CSRF

> Attackers can trick privileged users into uploading web shells via CSRF, leading to remote code execution on WordPress sites using File Manager Pro.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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:** 16 Oct 2023
- **Updated:** 23 Apr 2025
- **Also known as:** GHSA-3743-q7xh-2hv2

## What is CVE-2023-4827?

CVE-2023-4827 is a high-severity vulnerability in Unknown File Manager Pro, published on 16 Oct 2023. 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

The File Manager Pro WordPress plugin before 1.8 does not properly check the CSRF nonce in the `fs_connector` AJAX action. This allows attackers to make highly privileged users perform unwanted file system actions via CSRF attacks by using GET requests, such as uploading a web shell.

## Which versions are affected by CVE-2023-4827?

It affects 1 product.


Products: Ninjateam Filester.

## How do I fix CVE-2023-4827?

No fix has been published for CVE-2023-4827 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-4827 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-4827 exists.

## Other vulnerabilities in Unknown File Manager Pro

- [CVE-2024-8066](https://insights.sbomify.com/CVE-2024-8066/): File Manager Pro – Filester <= 1.8.6- Authenticated (Subscriber+) Arbitrary File Upload (high 7.5)
- [CVE-2024-7031](https://insights.sbomify.com/CVE-2024-7031/): File Manager Pro – Filester <= 1.8.2 - Authenticated Plugin Settings Update (high 7.5)
- [CVE-2024-9669](https://insights.sbomify.com/CVE-2024-9669/): File Manager Pro – Filester <= 1.8.5 - Authenticated (Administrator+) Local JavaScript File Inclusion (high 7.2)
- [CVE-2023-4861](https://insights.sbomify.com/CVE-2023-4861/): File Manager Pro < 1.8.1 - Admin+ Remote Code Execution (high 7.2)
- [CVE-2023-4862](https://insights.sbomify.com/CVE-2023-4862/): File Manager Pro < 1.8.1 - Admin+ Stored Cross-Site Scripting (medium 4.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-4827 and fix it if it is affected.

What it is: CVE-2023-4827 is a high-severity vulnerability in Unknown File Manager Pro, published on 16 Oct 2023. 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-2023-4827 exists.

Affected product: Unknown File Manager Pro. 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-2023-4827/ (Markdown: https://insights.sbomify.com/CVE-2023-4827/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-4827
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-4827
- OSV: https://osv.dev/vulnerability/CVE-2023-4827

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-4827/
Summaries are generated and may contain mistakes; the official description above is the record.