CVE-2026-89327: Unknown Fluentboards

Low severity, CVSS 3.8. EPSS: 0.3% chance of exploitation in the next 30 days.

The FluentBoards WordPress plugin before 2.0.15 does not verify that a board member submitting a comment is the user the comment is attributed to, allowing any board member to post comments that appear to be authored by another user, including administrators.

Affected products

• Unknown Fluentboards: before 2.0.15 (fixed in 2.0.15)

Published 2026-09-16. Last modified 2026-09-17.