Arc is an open, SQL-native time-series database for telemetry. Versions prior to 26.06.1 register Go's "net/http/pprof" handlers at "/debug/pprof/*" via "app.Use(pprof.New())" in "internal/api/server.go", and "/debug/pprof" is added to "PublicPrefixes" in "cmd/arc/main.go". The auth middleware short-circuits before the token check on prefix match, so the endpoints are reachable without any authentication. Version 26.06.1 contains a patch. Some workarounds are available. Block "/debug/pprof*" at a reverse proxy / load balancer in front of Arc, restrict Arc's API port to known-trusted networks via firewall rules, and/or patch the running build: comment out "app.Use(pprof.New())" in "internal/api/server.go" and rebuild.