# CVE-2024-2020: Calculated Fields Form Professional <= 5.1.56 - Unauthenticated Stored Cross-Site Scripting

> Unauthenticated attackers can inject arbitrary scripts via the form page href parameter in the Professional version, leading to stored XSS.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 13 Mar 2024
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-8f4m-xpm2-5rxj

## What is CVE-2024-2020?

CVE-2024-2020 is a high-severity cross-site scripting vulnerability in codepeople Calculated Fields Form, published on 13 Mar 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Calculated Fields Form plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the form page href parameter in all versions up to, and including, 5.1.56 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires the professional version or higher.

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

## Which versions are affected by CVE-2024-2020?

It affects 1 product.


Products: Codepeople Calculated Fields Form.

## How do I fix CVE-2024-2020?

No fix has been published for CVE-2024-2020 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-2020 being exploited?

There is no known exploitation of CVE-2024-2020 in the wild and no public exploit code.

## Other vulnerabilities in codepeople Calculated Fields Form

- [CVE-2024-29759](https://insights.sbomify.com/CVE-2024-29759/): WordPress Calculated Fields Form plugin <= 1.2.54 - Reflected Cross Site Scripting (XSS) vulnerability (high 7.1)
- [CVE-2024-0963](https://insights.sbomify.com/CVE-2024-0963/): Calculated Fields Form <= 1.2.52 - Authenticated (Contributor+) Stored Cross-Site Scripting (medium 6.4)
- [CVE-2020-7228](https://insights.sbomify.com/CVE-2020-7228/): Cross-site scripting in n/a (medium 5.4)
- [CVE-2024-12601](https://insights.sbomify.com/CVE-2024-12601/): Calculated Fields Form <= 5.2.63 - Denial of Service (medium 5.3)
- [CVE-2024-9940](https://insights.sbomify.com/CVE-2024-9940/): Calculated Fields Form <= 5.2.45 - HTML Injection (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-2020 and fix it if it is affected.

What it is: CVE-2024-2020 is a high-severity cross-site scripting vulnerability in codepeople Calculated Fields Form, published on 13 Mar 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-2020 in the wild and no public exploit code.

Affected product: codepeople Calculated Fields Form. 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-2024-2020/ (Markdown: https://insights.sbomify.com/CVE-2024-2020/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-2020
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-2020
- OSV: https://osv.dev/vulnerability/CVE-2024-2020

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From sbomify Insights: https://insights.sbomify.com/CVE-2024-2020/
Summaries are generated and may contain mistakes; the official description above is the record.