# CVE-2023-0546: FluentForms < 4.3.25 - Contributor+ Stored XSS via Custom HTML Form Field

> Contributors can inject JavaScript via custom HTML fields, leading to code execution or account takeover for visitors and admins.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 10 Apr 2023
- **Updated:** 11 Feb 2025
- **Also known as:** GHSA-hx6c-3qpr-f44p

## What is CVE-2023-0546?

CVE-2023-0546 is a medium-severity cross-site scripting vulnerability in Unknown Contact Form Plugin, published on 10 Apr 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

The Contact Form Plugin WordPress plugin before 4.3.25 does not properly sanitize and escape the srcdoc attribute in iframes in it's custom HTML field type, allowing a logged in user with roles as low as contributor to inject arbitrary javascript into a form which will trigger for any visitor to the form or admins previewing or editing the form.

## Which versions are affected by CVE-2023-0546?

It affects 1 product.


Products: Fluentforms Contact Form.

## How do I fix CVE-2023-0546?

No fix has been published for CVE-2023-0546 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-0546 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-0546 exists.

## Other vulnerabilities in Unknown Contact Form Plugin

- [CVE-2024-2771](https://insights.sbomify.com/CVE-2024-2771/): Missing authorization in Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder (critical 9.8)
- [CVE-2022-3463](https://insights.sbomify.com/CVE-2022-3463/): FluentForm < 4.3.13 - CSV Injection (critical 9.8)
- [CVE-2021-34620](https://insights.sbomify.com/CVE-2021-34620/): CSRF in WP Fluent Forms < 3.6.67 allows stored XSS and Privilege Escalation (high 8.8)
- [CVE-2024-4157](https://insights.sbomify.com/CVE-2024-4157/): Deserialization in Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder (high 7.5)
- [CVE-2024-2782](https://insights.sbomify.com/CVE-2024-2782/): Missing authorization in Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-0546 and fix it if it is affected.

What it is: CVE-2023-0546 is a medium-severity cross-site scripting vulnerability in Unknown Contact Form Plugin, published on 10 Apr 2023. Any signed-in user can exploit it over the network, 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-2023-0546 exists.

Affected product: Unknown Contact Form Plugin. 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-2023-0546/ (Markdown: https://insights.sbomify.com/CVE-2023-0546/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-0546
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-0546
- OSV: https://osv.dev/vulnerability/CVE-2023-0546

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-0546/
Summaries are generated and may contain mistakes; the official description above is the record.