OWASP Coraza WAF review
A flexible self-hosted WAF for developers working across proxies, servers, and Go.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
OWASP Coraza WAF is an open-source Web Application Firewall framework written in Go. It is designed for developers protecting web applications and APIs in self-hosted environments, with deployment options that include a library, application server, reverse proxy, sidecar, or container. Its rule support covers ModSecurity SecLang and the OWASP Core Rule Set, while endpoint protection extends to REST, GraphQL, and gRPC. Custom rules, operators, actions, directives, audit logging, and logging backends provide control over how traffic is evaluated and recorded.
Coraza’s main advantage is its ecosystem fit. Official connectors and integrations support Caddy, Envoy, Istio, HAProxy, Traefik, Apache HTTP Server, NGINX, WebAssembly proxies, and Go applications. That range makes it suitable for teams standardizing protection across different proxy and server environments rather than adopting a hosted WAF tied to one platform. The open-source, free model also keeps the software accessible for teams prepared to manage deployment, configuration, rules, and logging themselves.
The trade-off is operational responsibility. Coraza is a self-hosted framework, not a hosted SaaS product, so it suits teams with the skills and infrastructure to run a WAF within their own application and proxy stack. Its strongest focus is rule-based web and API protection, custom policy control, and broad integration. Rate limiting is not verified as a core Coraza capability, and AI features are not included. Choose Coraza for open-source control, SecLang compatibility, and multi-proxy deployment options; consider an alternative when managed operations or built-in rate-limiting capabilities are central requirements.
OWASP Coraza WAF pros and cons
- Where it wins
- Supports OWASP Core Rule Set and ModSecurity SecLang rules
- Protects REST, GraphQL, and gRPC endpoints
- Connects with Caddy, Envoy, HAProxy, Traefik, Apache, and NGINX
- Where it doesn't
- Requires self-hosted deployment and operational ownership
- Rate limiting is not verified as a core Coraza capability
- Does not include AI features
OWASP Coraza WAF fact sheet, pricing and score →
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