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8 articles
Editor's pickLearn how SSRF vulnerabilities arise in URL-fetching features, why DNS and redirects complicate validation, and how to reduce risk with layered controls.
Validate Express API input with schemas, type and length limits, safe errors, and context-specific output encoding. Learn why sanitization alone falls short.
Use Node.js streams and pipeline to process large files with backpressure, error propagation, and temporary-file cleanup—without buffering the whole file.
Learn how SSRF vulnerabilities arise in URL-fetching features and how allowlists, DNS checks, redirect controls, and network restrictions reduce risk.
Learn how SSRF vulnerabilities arise in URL-fetching features, why DNS and redirects complicate validation, and how to design safer server-side requests.
Learn how to debug a 502 Bad Gateway error by tracing reverse proxies, upstream servers, logs, health checks, and related HTTP status codes.