{"id":"CVE-2026-47735","revision":"06ad6c87677749669f5d5cc5c93b2aa4","records":[{"revision":"06ad6c87677749669f5d5cc5c93b2aa4","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-47735","aliases":[],"title":"Arc has an authenticated arbitrary local-file read via DuckDB I/O functions that bypasses RBAC table-level checks","description":"Arc is an open, SQL-native time-series database for telemetry. Prior to version 26.06.1, Arc's user-SQL validator (`internal/api/query.go:ValidateSQLRequest`) blocked only `read_parquet(` and `arc_partition_agg(` via regex denylist. The broader DuckDB I/O function family — `read_csv_auto`, `read_csv`, `read_json`, `read_json_auto`, `read_text`, `read_blob`, `glob`, `parquet_metadata`, `parquet_schema`, `read_xlsx`, etc. — was not blocked. RBAC table-reference extraction inspected only `FROM`/`JOIN` clauses, so scalar table functions in the `SELECT` list slipped past both layers. This is fixed in 2026.06.1 via a structural sandbox at the DuckDB layer. After lockdown, DuckDB refuses to open any file outside the allowlist and refuses further `INSTALL`/`LOAD`. Already-loaded extensions remain callable. Some workarounds are available. Restrict API access to known-trusted networks via firewall rules or, as a temporary mitigation, add `read_csv*`/`read_json*`/`glob` etc. to `dangerousSQLPattern` in `internal/api/query.go`.","state":0,"publishedAt":"2026-08-21T22:42:55.886+00:00","modifiedAt":"2026-08-25T13:35:54.838+00:00","affected":[{"ecosystem":"Vendor product","name":"arc","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Basekick-Labs\",\n                    \"product\": \"arc\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 2026.06.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","score":7.1,"severity":"HIGH"}],"references":["https://github.com/Basekick-Labs/arc/security/advisories/GHSA-p2j4-c4g6-rpf5","https://github.com/Basekick-Labs/arc/pull/442","https://github.com/Basekick-Labs/arc/commit/91bdc29d1a02178ccf8c66375eccf85203108dfb","https://github.com/Basekick-Labs/arc/releases/tag/v26.06.1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-47735","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-47735","identifiers":["CVE-2026-47735"]},"retained":false,"historicalAffected":[]}],"coverage":[]}