---
id: 1980
title: "Handling Large File Uploads in React: Securely Using AWS S3 Pre-signed URLs"
source_domain: hackerone.com
source_url: "https://www.hackerone.com/blog/handling-large-file-uploads-react-securely-using-aws-s3-pre-signed-urls"
published_at: "2024-01-11T02:33:55Z"
tags: ["cloud", "cloud-security", "aws", "react", "file-upload", "s3", "presigned-urls"]
phying_url: "https://phying.com/item/1980"
lang: en
---

# Handling Large File Uploads in React: Securely Using AWS S3 Pre-signed URLs

## Summary

S3 pre-signed URLs let React apps upload multi-gigabyte files without exposing AWS credentials. The article covers short-lived URLs, CORS settings, client validation, logging, and multipart uploads.

## Intelligence Metadata

- **Sources:** hackerone.com
- **Published:** 2024-01-11T02:33:55Z
- **Original:** https://www.hackerone.com/blog/handling-large-file-uploads-react-securely-using-aws-s3-pre-signed-urls
- **Phying News:** https://phying.com/item/1980