# CVE-2021-42752: Cross-site scripting in Fortinet FortiWLM

> An attacker can execute malicious JavaScript on victims via crafted HTTP requests in Fortinet FortiWLM, requiring an upgrade to mitigate.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:P/RL:X/RC:C`)
- **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:** 8 Dec 2021
- **Updated:** 25 Oct 2024
- **Also known as:** GHSA-jjwg-7f28-x45q

## What is CVE-2021-42752?

CVE-2021-42752 is a medium-severity cross-site scripting vulnerability in Fortinet FortiWLM, published on 8 Dec 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

A improper neutralization of input during web page generation ('cross-site scripting') in Fortinet FortiWLM version 8.6.1 and below allows attacker to execute malicious javascript code on victim's host via crafted HTTP requests

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

## Which versions are affected by CVE-2021-42752?

It affects 1 product.


Products: Fortinet Fortiwlm.

## How do I fix CVE-2021-42752?

No fix has been published for CVE-2021-42752 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-42752 being exploited?

There is no known exploitation of CVE-2021-42752 in the wild and no public exploit code.

## Other vulnerabilities in Fortinet FortiWLM

- [CVE-2017-7336](https://insights.sbomify.com/CVE-2017-7336/): Hardcoded credentials in Fortinet FortiWLM (critical 9.8)
- [CVE-2023-34990](https://insights.sbomify.com/CVE-2023-34990/): Path traversal in FortiWLM (critical 9.6)
- [CVE-2023-34993](https://insights.sbomify.com/CVE-2023-34993/): Command injection in FortiWLM (critical 9.6)
- [CVE-2023-36547](https://insights.sbomify.com/CVE-2023-36547/): Command injection in FortiWLM (critical 9.6)
- [CVE-2023-36548](https://insights.sbomify.com/CVE-2023-36548/): Command injection in FortiWLM (critical 9.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-42752 and fix it if it is affected.

What it is: CVE-2021-42752 is a medium-severity cross-site scripting vulnerability in Fortinet FortiWLM, published on 8 Dec 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-42752 in the wild and no public exploit code.

Affected product: Fortinet FortiWLM. 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-2021-42752/ (Markdown: https://insights.sbomify.com/CVE-2021-42752/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-42752
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-42752
- OSV: https://osv.dev/vulnerability/CVE-2021-42752

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-42752/
Summaries are generated and may contain mistakes; the official description above is the record.