CVE-2026-89331: Unknown Fluentboards

Medium severity, CVSS 5.3. EPSS: 0.2% chance of exploitation in the next 30 days.

The FluentBoards WordPress plugin before 2.1.0 does not properly restrict the member data returned by its public, token-shared board feature, allowing unauthenticated users to disclose the email addresses of a shared board's members, typically including administrators.

Affected products

• Unknown Fluentboards: from 1.95, before 2.1.0 (fixed in 2.1.0)

Published 2026-09-23. Last modified 2026-09-23.