{"id":"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.","aliases":["GHSA-j93g-rp6m-j32m","GO-2026-5457"],"modified":"2026-08-23T03:53:38.912187836Z","published":"2026-08-21T22:40:12.771Z","related":["openSUSE-SU-2026:21483-1"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-200","CWE-306","CWE-400"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48050.json"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/basekick-labs/arc","events":[{"introduced":"0"},{"fixed":"32a4091fb949f9cf060cdd804a07f6450dc426a8"},{"fixed":"8038f6f80f77bb48dbaa220e7415957be3988eff"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"26.06.1"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["v26.05.1","v26.04.1","v26.03.2","v26.03.1","v26.02.2","v26.02.1","v26.01.2","v26.01.1","v25.12.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48050.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N"}]}