{"id":"CVE-2026-48050","aliases":["GHSA-j93g-rp6m-j32m","GO-2026-5457"],"url":"https://o3.security/vulnerability/CVE-2026-48050","summary":"Arc: Unauthenticated access to Go debug pprof endpoints leaks runtime state and enables CPU-burn DoS","details":"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.","published":"2026-08-21T22:40:12.771Z","modified":"2026-08-27T11:30:53.367211871Z","cvss":null,"epss":{"score":0.00358,"percentile":0.28462,"asOf":"2026-08-24"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/basekick-labs/arc","fixedVersion":"0.0.0-20260520170331-32a4091fb949"}],"fix":{"url":"https://github.com/Basekick-Labs/arc/commit/32a4091fb949f9cf060cdd804a07f6450dc426a8","label":"Basekick-Labs/arc@32a4091"},"references":[{"type":"WEB","url":"https://github.com/Basekick-Labs/arc/releases/tag/v26.06.1"},{"type":"ADVISORY","url":"https://github.com/Basekick-Labs/arc/security/advisories/GHSA-j93g-rp6m-j32m"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48050.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-48050"},{"type":"FIX","url":"https://github.com/Basekick-Labs/arc/commit/32a4091fb949f9cf060cdd804a07f6450dc426a8"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-27T11:30:53.367211871Z"}}