{"cve":"CVE-2026-47735","nvd":{"published":"2026-08-21T23:16:24.917","modified":"2026-10-12T16:10:00.220","status":"Deferred","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`.","cvss_v4":{"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},"cvss_v3":null,"cwes":["CWE-22","CWE-200","CWE-918"],"references":["https://github.com/Basekick-Labs/arc/commit/91bdc29d1a02178ccf8c66375eccf85203108dfb","https://github.com/Basekick-Labs/arc/pull/442","https://github.com/Basekick-Labs/arc/releases/tag/v26.06.1","https://github.com/Basekick-Labs/arc/security/advisories/GHSA-p2j4-c4g6-rpf5"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:49:38.260478770+00:00"},"epss":{"cve":"CVE-2026-47735","score":0.00431,"percentile":0.37008,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-p2j4-c4g6-rpf5","url":"https://osv.dev/vulnerability/GHSA-p2j4-c4g6-rpf5","summary":"Arc has an authenticated arbitrary local-file read via DuckDB I/O functions that bypasses RBAC table-level checks","modified":"2026-06-25T23:11:18.501044977Z","packages":[{"ecosystem":"Go","name":"github.com/basekick-labs/arc","purl":"pkg:golang/github.com/basekick-labs/arc","ranges":["<0.0.0-20260520141557-91bdc29d1a02"],"fixed":["0.0.0-20260520141557-91bdc29d1a02"]}]},{"id":"GO-2026-5523","url":"https://osv.dev/vulnerability/GO-2026-5523","summary":"Arc has an authenticated arbitrary local-file read via DuckDB I/O functions that bypasses RBAC table-level checks in github.com/basekick-labs/arc","modified":"2026-06-25T23:01:19.233135293Z","packages":[{"ecosystem":"Go","name":"github.com/basekick-labs/arc","purl":"pkg:golang/github.com/basekick-labs/arc","ranges":["<0.0.0-20260520141557-91bdc29d1a02"],"fixed":["0.0.0-20260520141557-91bdc29d1a02"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}