CVE-2026-118681 go-chi chi before 5.5.0 Authentication Bypass via SupressNotFound Middleware

go-chi chi before 5.5.0 contains an authentication bypass in middleware.SupressNotFound, which calls Match with the live routing context and leaves a mounted router's parameter and child suffix in place for dispatch against the outer router. Unauthenticated attackers can request a mounted path...

CVE-2026-118681

Versions of go-chi chi prior to 5.5.0 are vulnerable to an authentication bypass in the middleware.SupressNotFound component. The root cause is that the middleware calls Match with a live routing context, which incorrectly preserves a mounted router's parameter and child suffix during dispatch ag...