CVE-2026-40601 HIGH

CVE-2026-40601: Chartbrew: Missing Authorization in /api/chart/:chart_id/query via team-level refresh toggle

Vendor Chartbrew
Product chartbrew
Weakness CWE-862 · Missing authorization
Published April 30, 2026
Last update May 4, 2026

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

Chartbrew is an open-source web application that can connect directly to databases and APIs and use the data to create charts. In version 4.9.0, Chartbrew exposes POST /api/chart/:chart_id/query without authentication. The endpoint only checks team.allowReportRefresh and does not verify that the target chart belongs to a public report, that the project is public, or that sharing policy allows the operation. An unauthenticated attacker who knows a chart identifier can trigger a data refresh and retrieve the current data of private charts. This issue has been patched in version 5.0.0.

Key dates

02Disclosure timeline

April 30, 2026 CVE published
May 4, 2026 Record updated