# CVE-2024-6243: HTML Forms < 1.3.33 - Admin+ Stored XSS

> Administrators can inject malicious scripts via form messages in HTML Forms plugin, bypassing unfiltered_html restrictions.

- **Severity:** Medium 5.9 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 22 Jul 2024
- **Updated:** 1 Aug 2024
- **Also known as:** GHSA-4r8x-26vf-3hx6

## What is CVE-2024-6243?

CVE-2024-6243 is a medium-severity cross-site scripting vulnerability in Unknown HTML Forms , published on 22 Jul 2024. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

The HTML Forms  WordPress plugin before 1.3.33 does not sanitize and escape the form message inputs, allowing high-privilege users, such as administrators, to perform Stored Cross-Site Scripting (XSS) attacks even when the unfiltered_html capability is disabled.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2024-6243?

It affects 1 product.


Products: Linksoftwarellc Html Forms.

## How do I fix CVE-2024-6243?

No fix has been published for CVE-2024-6243 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-6243 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-6243 exists.

## Other vulnerabilities in Unknown HTML Forms 

- [CVE-2022-3689](https://insights.sbomify.com/CVE-2022-3689/): HTML Forms < 1.3.25 - Admin+ SQLi (high 7.2)
- [CVE-2025-46236](https://insights.sbomify.com/CVE-2025-46236/): WordPress HTML Forms plugin <= 1.5.2 - Cross Site Scripting (XSS) Vulnerability (medium 6.5)
- [CVE-2024-6412](https://insights.sbomify.com/CVE-2024-6412/): HTML Forms – Simple WordPress Forms Plugin < 1.3.34 - Bulk Delete via CSRF (medium 6.5)
- [CVE-2023-50836](https://insights.sbomify.com/CVE-2023-50836/): WordPress HTML Forms Plugin <= 1.3.28 is vulnerable to Cross Site Scripting (XSS) (medium 5.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-6243 and fix it if it is affected.

What it is: CVE-2024-6243 is a medium-severity cross-site scripting vulnerability in Unknown HTML Forms , published on 22 Jul 2024. An attacker needs administrator access to exploit it, 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-2024-6243 exists.

Affected product: Unknown HTML Forms . 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-2024-6243/ (Markdown: https://insights.sbomify.com/CVE-2024-6243/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-6243
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-6243
- OSV: https://osv.dev/vulnerability/CVE-2024-6243

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-6243/
Summaries are generated and may contain mistakes; the official description above is the record.