# CVE-2021-38143: Cross-site scripting in n/a

> Stored XSS in Form Tools allows attackers to steal admin session cookies by injecting payloads into customer name fields.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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:** A user has to click or open something
- **Fix available:** No
- **Published:** 31 Aug 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-7jr4-xg2j-23mp

## What is CVE-2021-38143?

CVE-2021-38143 is a medium-severity cross-site scripting vulnerability in n/a, published on 31 Aug 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

An issue was discovered in Form Tools through 3.0.20. When an administrator creates a customer account, it is possible for the customer to log in and proceed with a change of name and last name. However, these fields are vulnerable to XSS payload insertion, being triggered in the admin panel when the admin tries to see the client list. This type of XSS (stored) can lead to the extraction of the PHPSESSID cookie belonging to the admin.

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

## Which versions are affected by CVE-2021-38143?

It affects 1 product.


Products: Formtools Core.

## How do I fix CVE-2021-38143?

No fix has been published for CVE-2021-38143 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-38143 being exploited?

There is no known exploitation of CVE-2021-38143 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2021-38145](https://insights.sbomify.com/CVE-2021-38145/): SQL injection in n/a (critical 9.8)
- [CVE-2021-38144](https://insights.sbomify.com/CVE-2021-38144/): Cross-site scripting in n/a (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-38143 and fix it if it is affected.

What it is: CVE-2021-38143 is a medium-severity cross-site scripting vulnerability in n/a, published on 31 Aug 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-38143 in the wild and no public exploit code.

Affected product: n/a. 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-2021-38143/ (Markdown: https://insights.sbomify.com/CVE-2021-38143/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-38143
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-38143
- OSV: https://osv.dev/vulnerability/CVE-2021-38143

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-38143/
Summaries are generated and may contain mistakes; the official description above is the record.