# CVE-2023-4666: Form-Maker < 1.15.20 - Unauthenticated Arbitrary File Upload

> Unauthenticated attackers can upload arbitrary files via signature validation flaws, leading to remote code execution on WordPress sites using Form Maker.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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:** Not needed
- **Fix available:** No
- **Published:** 16 Oct 2023
- **Updated:** 23 Apr 2025
- **Also known as:** GHSA-w72r-ch4p-xqg3

## What is CVE-2023-4666?

CVE-2023-4666 is a critical vulnerability in Unknown Form Maker by 10Web, published on 16 Oct 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Form Maker by 10Web WordPress plugin before 1.15.20 does not validate signatures when creating them on the server from user input, allowing unauthenticated users to create arbitrary files and lead to RCE

## Which versions are affected by CVE-2023-4666?

It affects 1 product.


Products: 10web Form Maker.

## How do I fix CVE-2023-4666?

No fix has been published for CVE-2023-4666 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-4666 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-4666 exists.

Public exploit code:

- Form-Maker < 1.15.20 - Unauthenticated Arbitrary File Upload (nuclei): http/cves/2023/CVE-2023-4666.yaml

## Other vulnerabilities in Unknown Form Maker by 10Web

- [CVE-2019-10866](https://insights.sbomify.com/CVE-2019-10866/): SQL injection in n/a (critical 9.8)
- [CVE-2019-11590](https://insights.sbomify.com/CVE-2019-11590/): Cross-site request forgery in n/a (high 8.8)
- [CVE-2022-3300](https://insights.sbomify.com/CVE-2022-3300/): Form Maker by 10Web < 1.15.6 - Admin+ SQLI (high 7.2)
- [CVE-2024-43220](https://insights.sbomify.com/CVE-2024-43220/): WordPress Form Maker by 10Web plugin <= 1.15.26 - Reflected Cross Site Scripting (XSS) vulnerability (high 7.1)
- [CVE-2023-45070](https://insights.sbomify.com/CVE-2023-45070/): WordPress Form Maker by 10Web Plugin <= 1.15.18 is vulnerable to Cross Site Scripting (XSS) (high 7.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-4666 and fix it if it is affected.

What it is: CVE-2023-4666 is a critical vulnerability in Unknown Form Maker by 10Web, published on 16 Oct 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-4666 exists.

Affected product: Unknown Form Maker by 10Web. 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-2023-4666/ (Markdown: https://insights.sbomify.com/CVE-2023-4666/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-4666
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-4666
- OSV: https://osv.dev/vulnerability/CVE-2023-4666

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-4666/
Summaries are generated and may contain mistakes; the official description above is the record.