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Open Source WAF / WAF Engine / Go Security

Coraza WAF

Coraza is a Go-based WAF engine commonly considered when teams want ModSecurity-compatible rule support in modern Go-native environments.

See Hands-On EvidenceCompare AlternativesOpen Setup GuideOfficial Product Page

Quick answer

Should you shortlist Coraza?

Coraza is most relevant for Go platforms and Custom gateways. Validate this main constraint before committing to a production design: Usually requires integration work.

Deployment
Library, Reverse Proxy integrations, Custom gateways
Pricing
Free
License
Open source

Data card

Pricing
Free
License
Open source
Deployment
Library, Reverse Proxy integrations, Custom gateways
Integrations
Caddy, Traefik, OWASP CRS, Go services
Last checked
2026-05-30

Best fit

  • Go platforms
  • Custom gateways
  • CRS-based detection

Potential limitations

  • Usually requires integration work
  • Not a full managed edge security platform

WAFWiki read

Open-source WAF engine written in Go.

This profile is written for evaluation rather than promotion. Use it to understand where Coraza fits, which assumptions need validation, and which alternatives deserve side-by-side testing.

Evaluation checklist

  • Choose the integration shape first: Caddy, custom Go gateway, reverse proxy, or embedded library.
  • Pin the Coraza and OWASP CRS versions used in the proof of concept so rule behavior is reproducible.
  • Measure engineering effort for request-body handling, logging, rule updates, and rollback.
  • Compare the integration workload against packaged self-hosted WAF options before committing.

Feature snapshot

Coraza capabilities to verify

Rule engineOWASP CRS supportEmbeddable architecture

Comparisons

Coraza alternatives and versus pages

SafeLine vs CorazaModSecurity vs Coraza

WAFWiki lab evidence

Coraza results observed in the local test stack

Coraza Caddy Docker Test: CRS 4.25.0 ResultsHands-on Coraza and Caddy Docker test with pinned versions, OWASP CRS 4.25.0, ten clean and attack-like requests, HTTP results, logs, and build constraints.ModSecurity vs Coraza Docker Test: 20 Request ResultsOriginal ModSecurity vs Coraza Docker comparison using the same OWASP CRS 4.25.0, upstream, and 20 HTTP decisions across clean, SQLi, XSS, query, and JSON cases.WAF JSON Body Test: ModSecurity vs CorazaHands-on JSON request-body test showing how ModSecurity and Coraza handled one clean body plus controlled SQLi-like and XSS-like fields under OWASP CRS 4.25.0.Docker WAF Latency Test: ModSecurity vs CorazaLocal Docker response-time baseline with 40 sequential requests per path for a direct upstream, ModSecurity NGINX, and Coraza Caddy, plus memory snapshots and limits.

FAQ

What is Coraza best for?

Coraza is commonly evaluated for Go platforms, Custom gateways, CRS-based detection.

Is Coraza free?

Coraza pricing path: Free. Always verify current pricing on the official website.

Sources