# CVE-2021-24160: Responsive Menu 4.0.0 - 4.0.3 - Authenticated Arbitrary File Upload

> Authenticated subscribers can upload malicious PHP files via zip archives to achieve remote code execution on WordPress sites using the Responsive Menu plugin.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Apr 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-fjhj-x5j3-wcrf

## What is CVE-2021-24160?

CVE-2021-24160 is a high-severity vulnerability in ExpressTech Responsive Menu Pro, published on 5 Apr 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

In the Reponsive Menu (free and Pro) WordPress plugins before 4.0.4, subscribers could upload zip archives containing malicious PHP files that would get extracted to the /rmp-menu/ directory. These files could then be accessed via the front end of the site to trigger remote code execution and ultimately allow an attacker to execute commands to further infect a WordPress site.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type)

## Which versions are affected by CVE-2021-24160?

It affects 1 product.


Products: Expresstech Responsive Menu.

## How do I fix CVE-2021-24160?

No fix has been published for CVE-2021-24160 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24160 being exploited?

There is no known exploitation of CVE-2021-24160 in the wild and no public exploit code.

Public exploit code:

- Exploit CVE-2021-24160 (github_poc): https://github.com/likeww/Exploit-CVE-2021-24160

## Other vulnerabilities in ExpressTech Responsive Menu Pro

- [CVE-2021-24161](https://insights.sbomify.com/CVE-2021-24161/): Responsive Menu < 4.0.4 - CSRF to Arbitrary File Upload (high 8.8)
- [CVE-2021-24162](https://insights.sbomify.com/CVE-2021-24162/): Responsive Menu < 4.0.4 - CSRF to Settings Update (high 8.8)
- [CVE-2017-18513](https://insights.sbomify.com/CVE-2017-18513/): Cross-site request forgery in n/a (high 8.8)
- [CVE-2022-25602](https://insights.sbomify.com/CVE-2022-25602/): File upload in Responsive Menu (WordPress plugin) (high 8.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24160 and fix it if it is affected.

What it is: CVE-2021-24160 is a high-severity vulnerability in ExpressTech Responsive Menu Pro, published on 5 Apr 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-24160 in the wild and no public exploit code.

Affected product: ExpressTech Responsive Menu Pro. 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-2021-24160/ (Markdown: https://insights.sbomify.com/CVE-2021-24160/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24160
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24160
- OSV: https://osv.dev/vulnerability/CVE-2021-24160

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-24160/
Summaries are generated and may contain mistakes; the official description above is the record.