CVE-2026-40784: Mahmudul Hasan Arif Fluentboards

High severity, CVSS 8.1. EPSS: 0.3% chance of exploitation in the next 30 days.

Authorization Bypass Through User-Controlled Key vulnerability in Mahmudul Hasan Arif FluentBoards fluent-boards allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects FluentBoards: from n/a through <= 1.91.2.

Affected products

• Mahmudul Hasan Arif Fluentboards: up to and including 1.91.2

Published 2026-04-15. Last modified 2026-06-17.