Eliminate server RAM saturation, Vercel payload limits, and expensive bandwidth costs. Direct-to-S3/R2 presigned streaming engineered with a 5-layer defense-in-depth pipeline that protects your stack without compromising upload speed or production efficiency.
0 KB
Server Payload Bandwidth
3x–5x
Faster Parallel Uploads
5 Layers
Zero-Overhead Security
100%
GPS / EXIF Sanitized
Select a sample payload to watch how the client Web Worker and server-side magic byte inspector process files in real time.
Stripping GPS & compressing in background
Locks Content-Type & 7-char key
0 KB server bandwidth streamed
S3 Range: bytes=0-15 hex scan
Prunes old avatar & issues public URL
> Select a test scenario above to execute the 5-layer pipeline...
Everything you need to ship enterprise-grade file uploading without server memory bloat or third-party vendor lock-in.
Files stream directly from the browser to Cloudflare R2 or AWS S3 via presigned PUT URLs. No payload ever touches your Node.js or Vercel server RAM.
Upload 20+ images simultaneously with configurable concurrency (concurrency: 4), individual progress trackers, and settled fault tolerance.
Automatically scrubs sensitive GPS coordinates, device serials, and timestamps while resizing images on background browser threads before transfer.
Validates mathematical file signatures via S3 byte-range reads. Malicious polyglot webshells are purged from storage within milliseconds.
File upload vulnerabilities are consistently the highest-rewarded bugs on HackerOne ($3,000 to $30,000+). Here is how Secure Next Upload defends your stack:
| CWE ID | Vulnerability Name | Defensive Mitigation | Severity | Bounty Impact |
|---|---|---|---|---|
| CWE-434 | Unrestricted File Upload | 16-byte magic byte scan + presigned token locks + post-upload HeadObject check | CRITICAL | $3k – $30k+ |
| CWE-200 | EXIF / GPS Location Leakage | Client-side Web Worker strips all GPS & device metadata before request | HIGH | $1k – $5k |
| CWE-22 / 646 | Path Traversal & Filename Spoofing | Generates random 7-character object keys (aB3_x9Z.ext), discarding user paths |
CRITICAL | $3k – $15k |
| CWE-400 | Denial of Service / OOM Crashes | Direct S3 PUT bypasses Node.js memory; zero server RAM saturation on Vercel | HIGH | $500 – $3k |
| CWE-79 | Stored XSS via SVG/HTML | Strict entity MIME constraints & content sanitization | HIGH | $1k – $5k |
See how Secure Next Upload compares with managed SaaS platforms and open-source file handlers.
| Feature | Secure Next Upload | next-upload (TimMikeladze) | UploadThing | Multer / Server Uploads |
|---|---|---|---|---|
| Server Bandwidth | ✅ Zero (Direct PUT) | ✅ Zero (Presigned) | ✅ Zero (Direct) | ❌ High (Full payload buffers) |
| 16-Byte Magic Byte Check | ✅ Built-in (S3 Range: 0-15) | ❌ None (MIME header only) | ⚠️ Basic verification | ⚠️ Requires server buffer |
| Client Web Worker EXIF Stripping | ✅ Built-in (GPS & camera scrub) | ❌ None (Raw unstripped files) | ❌ None (Manual) | ❌ None |
| Parallel Concurrency Pool | ✅ Built-in (concurrency: 3-5) | ❌ Sequential / Manual | ⚠️ Basic queue | ❌ Manual implementation |
| Atomic Replacement (Avatar swap) | ✅ Built-in (Auto-prunes old file) | ❌ Manual (Orphan storage bloat) | ❌ Manual | ❌ Manual |
| Multi-Entity Registry | ✅ Built-in (Type-Safe Registry) | ❌ Single upload endpoint | ✅ FileRouter | ❌ Custom middleware boilerplates |
| Data Ownership & Pricing | 💸 100% Self-Hosted ($0 lock-in) | 💸 100% Self-Hosted (S3/R2) | 💳 Monthly SaaS Tier | 💸 High Server & Bandwidth Costs |
Copy-paste ready route handlers and React components.
"use client";
import { useFileUpload } from "@axosecurity/secure-next-upload/client";
export function MultiFileGallery() {
const { uploadMultiple, fileItems, progress, status, isUploading } = useFileUpload({
entityType: "gallery",
concurrency: 4, // Upload 4 files in parallel
onFileSuccess: (res, file) => console.log(`Uploaded ${file.name}:`, res.fileUrl),
});
return (
<div>
<input
type="file"
multiple
onChange={(e) => e.target.files && uploadMultiple(Array.from(e.target.files))}
/>
{isUploading && (
<div>
<p>Overall Progress: {progress}% ({status})</p>
{fileItems.map((item) => (
<div key={item.id}>{item.file.name}: {item.status} ({item.progress}%)</div>
))}
</div>
)}
</div>
);
}
Axo Security • Defensive AppSec & Zero-Trust Cloud Architectures
Specializing in web application security, bug bounty vulnerability research, and hardening high-risk cloud storage attack surfaces against real-world RCE, SSRF, and CWE-434 exploit vectors.