dev.to/tag/security· Oct 22, 2026· by 禾

How to Protect a GraphQL API with a Reverse-Proxy WAF

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GraphQL rarely looks like a traditional multi-page site. Most APIs expose one HTTP endpoint, accept a JSON document, and return another JSON document. That shape tempts teams to skip a web application firewall, or to expect the firewall to understand selections, fragments, and resolver cost. Neither shortcut is sound. This is a decision checklist for placing a general HTTP WAF in front of a GraphQL API without treating undocumented behavior as a feature. Start with the traffic path, not the sche
🎯 Vulnerability: Web Security Vulnerability
💡 Defense Fix: Implement strict input validation, contextual output encoding, and enforce least-privilege authorization controls.
#graphql#waf#security#checklist