# CVE-2021-24705: NEX-Forms < 8.4.3 - Stored Cross-Site Scripting via CSRF

> Attackers can inject malicious scripts into NEX-Forms via CSRF, potentially compromising admin accounts and executing code in the browser.

- **Severity:** Medium 4.8 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N`)
- **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:** 13 Dec 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-5w27-mg8j-wjm2

## What is CVE-2021-24705?

CVE-2021-24705 is a medium-severity cross-site scripting vulnerability in Unknown NEX-Forms, published on 13 Dec 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

The NEX-Forms WordPress plugin before 8.4.3 does not have CSRF checks in place when editing a form, and does not escape some of its settings as well as form fields before outputting them in attributes. This could allow attackers to make a logged in admin edit arbitrary forms with Cross-Site Scripting payloads in them

## Which versions are affected by CVE-2021-24705?

It affects 1 product.


Products: Basixonline Nex-Forms.

## How do I fix CVE-2021-24705?

No fix has been published for CVE-2021-24705 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24705 being exploited?

There is no known exploitation of CVE-2021-24705 in the wild and no public exploit code.

## Other vulnerabilities in Unknown NEX-Forms

- [CVE-2015-9452](https://insights.sbomify.com/CVE-2015-9452/): SQL injection in n/a (critical 9.8)
- [CVE-2022-3142](https://insights.sbomify.com/CVE-2022-3142/): NEX-Forms < 7.9.7 - Authenticated SQLi (high 8.8)
- [CVE-2024-53808](https://insights.sbomify.com/CVE-2024-53808/): WordPress NEX-Forms plugin <= 8.7.8 - SQL Injection vulnerability (high 8.5)
- [CVE-2023-50838](https://insights.sbomify.com/CVE-2023-50838/): WordPress NEX-Forms – Ultimate Form Builder Plugin <= 8.5.5 is vulnerable to SQL Injection (high 7.6)
- [CVE-2021-34675](https://insights.sbomify.com/CVE-2021-34675/): Auth bypass in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24705 and fix it if it is affected.

What it is: CVE-2021-24705 is a medium-severity cross-site scripting vulnerability in Unknown NEX-Forms, published on 13 Dec 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-24705 in the wild and no public exploit code.

Affected product: Unknown NEX-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-2021-24705/ (Markdown: https://insights.sbomify.com/CVE-2021-24705/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24705
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24705
- OSV: https://osv.dev/vulnerability/CVE-2021-24705

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-24705/
Summaries are generated and may contain mistakes; the official description above is the record.