CVE-2026-81664: Missing Authentication for Critical Function

The OpenFaaS gateway registers GET /system/telemetry in gateway/main.go and, when basicauth is enabled, wraps each administrative /system/ handler in auth.DecorateWithBasicAuth. TelemetryHandler was left out of that wrap block from 0.27.11, which introduced the route, until 0.27.14, which added i...