# CVE-2021-4096: Fancy Product Designer <= 4.7.5 - Cross-Site Request Forgery to Arbitrary File Upload

> Attackers can upload malicious files via CSRF to gain webshell access on servers using the Fancy Product Designer WordPress plugin.

- **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:** 19 Apr 2022
- **Updated:** 7 Feb 2025
- **Also known as:** GHSA-h292-vmfp-f8m3

## What is CVE-2021-4096?

CVE-2021-4096 is a high-severity vulnerability in 	fancy-product-designer Fancy Product Designer, published on 19 Apr 2022. 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 Fancy Product Designer plugin for WordPress is vulnerable to Cross-Site Request Forgery via the FPD_Admin_Import class that makes it possible for attackers to upload malicious files that could be used to gain webshell access to a server in versions up to, and including, 4.7.5.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type), CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2021-4096?

It affects 1 product.


Products: Radykal Fancy Product Designer.

## How do I fix CVE-2021-4096?

No fix has been published for CVE-2021-4096 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-4096 being exploited?

There is no known exploitation of CVE-2021-4096 in the wild and no public exploit code.

## Other vulnerabilities in 	fancy-product-designer Fancy Product Designer

- [CVE-2021-24370](https://insights.sbomify.com/CVE-2021-24370/): Fancy Product Designer < 4.6.9 - Unauthenticated Arbitrary File Upload and RCE (critical 9.8)
- [CVE-2021-4334](https://insights.sbomify.com/CVE-2021-4334/): Fancy Product Designer <= 4.6.9 - Insufficient Authorization to Arbitrary Options Update via fpd_update_options (high 8.8)
- [CVE-2021-4134](https://insights.sbomify.com/CVE-2021-4134/): Fancy Product Designer <= 4.7.4 Admin+ SQL Injection (high 7.2)
- [CVE-2024-0365](https://insights.sbomify.com/CVE-2024-0365/): Fancy Product Designer < 6.1.5 - Admin+ SQL Injection (medium 6.5)
- [CVE-2024-0905](https://insights.sbomify.com/CVE-2024-0905/): Fancy Product Designer < 6.1.8 - Reflected Cross Site Scripting (medium 6.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-4096 and fix it if it is affected.

What it is: CVE-2021-4096 is a high-severity vulnerability in 	fancy-product-designer Fancy Product Designer, published on 19 Apr 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-4096 in the wild and no public exploit code.

Affected product: 	fancy-product-designer Fancy Product Designer. 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-2021-4096/ (Markdown: https://insights.sbomify.com/CVE-2021-4096/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-4096
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-4096
- OSV: https://osv.dev/vulnerability/CVE-2021-4096

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-4096/
Summaries are generated and may contain mistakes; the official description above is the record.