# CVE-2020-36413: Cross-site scripting in n/a

> Authenticated attackers can execute arbitrary scripts via stored XSS in the Maintenance Mode module of CMS Made Simple.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`)
- **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:** 2 Jul 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-7v24-w9vj-26gf

## What is CVE-2020-36413?

CVE-2020-36413 is a medium-severity cross-site scripting vulnerability in Cmsmadesimple Cms Made Simple, published on 2 Jul 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 stored cross scripting (XSS) vulnerability in CMS Made Simple 2.2.14 allows authenticated attackers to execute arbitrary web scripts or HTML via a crafted payload entered into the "Exclude these IP addresses from the "Site Down" status" parameter under the "Maintenance Mode" module.

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

## Which versions are affected by CVE-2020-36413?

It affects 1 product.


Products: Cmsmadesimple Cms Made Simple.

## How do I fix CVE-2020-36413?

No fix has been published for CVE-2020-36413 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-36413 being exploited?

There is no known exploitation of CVE-2020-36413 in the wild and no public exploit code.

## Other vulnerabilities in Cmsmadesimple Cms Made Simple

- [CVE-2010-4663](https://insights.sbomify.com/CVE-2010-4663/): Other in n/a (critical 10.0)
- [CVE-2024-1527](https://insights.sbomify.com/CVE-2024-1527/): Unrestricted Upload of File with Dangerous Type in CMS Made Simple (critical 9.8)
- [CVE-2018-10081](https://insights.sbomify.com/CVE-2018-10081/): Auth bypass in n/a (critical 9.8)
- [CVE-2018-10085](https://insights.sbomify.com/CVE-2018-10085/): Deserialization in n/a (critical 9.8)
- [CVE-2017-1000453](https://insights.sbomify.com/CVE-2017-1000453/): Code injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-36413 and fix it if it is affected.

What it is: CVE-2020-36413 is a medium-severity cross-site scripting vulnerability in Cmsmadesimple Cms Made Simple, published on 2 Jul 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-2020-36413 in the wild and no public exploit code.

Affected product: Cmsmadesimple Cms Made Simple. 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-2020-36413/ (Markdown: https://insights.sbomify.com/CVE-2020-36413/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-36413
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-36413
- OSV: https://osv.dev/vulnerability/CVE-2020-36413

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-36413/
Summaries are generated and may contain mistakes; the official description above is the record.