---
id: CVE-2026-47735
title: 'Arc is an open, SQL-native time-series database for telemetry'
summary: >-
  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 …
severity: high
cwe:
  - CWE-22
  - CWE-200
  - CWE-918
vendor: basekick-labs
product: github.com/basekick-labs/arc
affected:
  - github.com/basekick-labs/arc < 0.0.0-20260520141557-91bdc29d1a02
patched:
  - github.com/basekick-labs/arc 0.0.0-20260520141557-91bdc29d1a02
published: '2026-08-21'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:06:39.057'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-47735'
references:
  - url: >-
      https://github.com/Basekick-Labs/arc/commit/91bdc29d1a02178ccf8c66375eccf85203108dfb
    label: security-advisories@github.com
  - url: 'https://github.com/Basekick-Labs/arc/pull/442'
    label: security-advisories@github.com
  - url: 'https://github.com/Basekick-Labs/arc/releases/tag/v26.06.1'
    label: security-advisories@github.com
  - url: >-
      https://github.com/Basekick-Labs/arc/security/advisories/GHSA-p2j4-c4g6-rpf5
    label: security-advisories@github.com
  - url: 'https://github.com/advisories/GHSA-p2j4-c4g6-rpf5'
tags:
  - nvd
  - ghsa
  - go
epss: 0.00294
epssPercentile: 0.22155
aliases:
  - GHSA-p2j4-c4g6-rpf5
ecosystem: go
ingestedAt: '2026-07-07T15:41:59.612Z'
---

## Overview

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`.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-47735)

Affected packages:

- `github.com/basekick-labs/arc < 0.0.0-20260520141557-91bdc29d1a02`

Patched in:

- `github.com/basekick-labs/arc 0.0.0-20260520141557-91bdc29d1a02`

Source: https://github.com/advisories/GHSA-p2j4-c4g6-rpf5