Fix Insufficient Logging & Monitoring in Chi
Insufficient Logging & Monitoring is a silent killer in Go microservices. If you aren't logging request metadata, status codes, and trace IDs in your Chi router, you're flying blind during an active breach. Attackers exploit this visibility gap to perform long-term reconnaissance and lateral movement without triggering alerts. To harden a Chi-based API, you must implement structured logging, request correlation, and panic recovery middleware.
The Vulnerable Pattern
package mainimport ( “github.com/go-chi/chi/v5” “net/http” )
func main() { r := chi.NewRouter()
// VULNERABILITY: No logging middleware or error tracking. // Failed logins, 500 errors, and malicious probes go unrecorded. r.Post("/login", func(w http.ResponseWriter, r *http.Request) { // logic here... w.WriteHeader(http.StatusUnauthorized) }) http.ListenAndServe(":8080", r)
}
The Secure Implementation
The fix transitions from 'silent' to 'observable' by implementing a robust middleware pipeline. 1. `RequestID` ensures every log entry can be correlated to a specific user session. 2. `RealIP` prevents attackers from hiding behind load balancers. 3. `middleware.Logger` provides a baseline for HTTP metrics (latency, status codes). 4. Structured logging (using `slog` or `zap`) is critical; it turns raw text into queryable data for SOC teams. Finally, the `Recoverer` middleware ensures that even if the application crashes, the stack trace is logged rather than disappearing into stderr.
package mainimport ( “github.com/go-chi/chi/v5” “github.com/go-chi/chi/v5/middleware” “log/slog” “net/http” “os” )
func main() { // Use structured JSON logging for SIEM ingestion logger := slog.New(slog.NewJSONHandler(os.Stdout, nil))
r := chi.NewRouter() // SECURE: Essential middleware stack r.Use(middleware.RequestID) // Correlation for distributed tracing r.Use(middleware.RealIP) // Capture actual client IP, not proxy IP r.Use(middleware.Logger) // Log every request/response cycle r.Use(middleware.Recoverer) // Log panics and prevent process crashes r.Post("/login", func(w http.ResponseWriter, r *http.Request) { ctxID := middleware.GetReqID(r.Context()) // Log security-relevant events with context logger.Warn("unauthorized access attempt", "request_id", ctxID, "path", r.URL.Path, "remote_addr", r.RemoteAddr) w.WriteHeader(http.StatusUnauthorized) }) http.ListenAndServe(":8080", r)
}
Your Chi API
might be exposed to Insufficient Logging & Monitoring
74% of Chi apps fail this check. Hackers use automated scanners to find this specific flaw. Check your codebase before they do.
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