Open-source upload security for Node.js. Inspect first, store later.
Blog
The docs are the canonical integration surface. The blog covers decision pages, search-intent tutorials, and deeper explanations that help teams evaluate file upload security in Node.js without losing the privacy-first, in-process context.
Use @fastify/multipart and @pompelmi/fastify-plugin to block risky uploads in Fastify before your handler writes to disk or object storage.
A practical Multer security checklist for Node.js: memory storage, route-specific limits, archive controls, verdict handling, and scan-before-storage.
Use PompelmiModule, PompelmiService, and memory-backed NestJS upload flows to block or quarantine risky files before storage.
Understand the difference between validation and scanning in Node.js upload routes, and why secure file handling usually needs both.
Use Multer, memory-backed uploads, and @pompelmi/express-middleware to inspect untrusted files in Express before disk or object storage.
A practical Node.js pattern for scanning uploads before they reach live S3 storage, using memory-backed routes or quarantine-then-promote workflows.
Secure a Next.js App Router upload route with @pompelmi/next-upload, MIME enforcement, archive controls, and a scan-before-storage flow.
A practical guide to secure file uploads in Node.js with scan-before-storage, archive controls, suspicious document handling, and route-specific policies.
Add YARA to a Node.js file upload pipeline when you need local signature matching on top of application-layer upload checks.
Protect Node.js upload endpoints from ZIP bombs with entry limits, uncompressed-size controls, compression-ratio checks, traversal detection, and quarantine-first handling.
A practical Multer virus-scan pattern for Node.js using Express, memoryStorage, @pompelmi/express-middleware, and inspect-before-storage handling.
Use @pompelmi/fastify-plugin as a Fastify preHandler to inspect uploads early, enforce route-specific policies, and keep risky files out of storage.
A practical rollout checklist for Node.js upload routes: parser limits, content inspection, archive controls, quarantine decisions, and storage isolation.
Add an upload-security boundary to Koa with @koa/multer, @pompelmi/koa-middleware, and route-specific content inspection before storage.
Extension filters still matter, but they are only the first layer. Learn where MIME sniffing and content inspection fit in a real upload-security design.
Use PompelmiModule, PompelmiInterceptor, and PompelmiService to add in-process upload scanning to NestJS without pushing bytes to a cloud API.
Secure a Next.js App Router upload route with @pompelmi/next-upload, Node runtime route handlers, and inspect-before-storage handling.
Use Nitro server routes and Pompelmi's core scanner to inspect files in-process before storage, with a clear path for quarantine-first object storage flows.
Build a quarantine-and-promote upload workflow: staging storage, async review queues, human-in-the-loop flows, and how to use Pompelmi's verdict system without overblocking.
A practical catalog of the most frequent file upload security mistakes Node.js developers make — and how to close each gap using Pompelmi's upload guard.
Design patterns for upload security in regulated environments: quarantine flows, audit trails, role-based policies, and how Pompelmi fits privacy-sensitive data processing.
A practical, honest comparison of Pompelmi's heuristic scanner, ClamAV integration, and custom YARA pipelines for Node.js application upload security.
Cloud AV APIs are convenient but ship your users' files to third parties. In-process scanning with Pompelmi keeps data where it belongs. Here's when each approach makes sense.
Add pompelmi's CLI to your CI/CD pipeline to scan build artifacts, user-supplied files, and dependency assets before they ship to production. Exit codes included.
Turn Pompelmi's onScanEvent callbacks into structured metrics, alerts, and dashboards. Learn how reason codes make security incidents actionable instead of opaque.
Polyglot files are valid in two formats simultaneously — a JPEG that is also a valid PHP script, or a PDF that contains a ZIP. Learn how they bypass basic checks and what Pompelmi detects.
Learn how to secure your development pipeline against supply chain attacks through malicious file uploads in dependencies, packages, and third-party integrations.
Learn advanced techniques to optimize Pompelmi's file scanning performance for high-throughput applications while maintaining security effectiveness.
Dive deep into real malware samples and attack vectors, exploring how Pompelmi's multi-layered security approach detects sophisticated threats in file uploads.
Learn how to integrate YARA rules into Pompelmi for advanced malware detection in file uploads.
Deep dive into ZIP bomb attacks and how Pompelmi's multi-layered defense mechanisms keep your Node.js applications safe.
Learn how Pompelmi protects your Node.js applications from malicious file uploads with deep ZIP inspection, MIME validation, and optional YARA scanning.
