CVE-2026-89327

FluentBoards <= 2.0.14 - Authenticated (Board Member+) Comment Author Spoofing

2026-09-14 00:00

Strategic Overview

Status: Patched in 2.0.15
Affected Plugin: FluentBoards – Project Management, Task Management, Goal Tracking, Kanban Board, and, Team Collaboration
Affected Version: <= 2.0.14
CVSS: 4.3Medium
Weakness type: CWE-290 · Authentication Bypass by Spoofing
CVE: CVE-2026-89327

View all FluentBoards – Project Management, Task Management, Goal Tracking, Kanban Board, and, Team Collaboration vulnerabilities

At a glance

CVE-2026-89327 is a medium-severity Authentication Bypass by Spoofing vulnerability in the FluentBoards WordPress plugin, affecting versions <= 2.0.14. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Board Member level or above. The issue is fixed in version 2.0.15; sites on affected versions should update now. Disclosed September 2026, reported by vuxvinh.

Vulnerability Overview

The FluentBoards – Project Management, Task Management, Goal Tracking, Kanban Board, and, Team Collaboration plugin for WordPress is vulnerable to spoofing in all versions up to, and including, 2.0.14. This makes it possible for authenticated attackers, with Custom-level access and above, to spoof comments as different authors.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.

CWE-290: Authentication Bypass by Spoofing

This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.

Remediation

Update to version 2.0.15, or a newer patched version

How does WordSec protect against this?

The fix is the thing that ends this: FluentBoards 2.0.15 closes this, and updating the plugin is the step that ends it.

Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-89327 https://www.wordfence.com/threat-intel/vulnerabilities/id/744a902e-d4fd-4159-9e68-dbb167573793 https://nvd.nist.gov/vuln/detail/CVE-2026-89327

Related records

Other vulnerabilities in FluentBoards – Project Management, Task Management, Goal Tracking, Kanban Board, and, Team Collaboration

CVSS Vector

4.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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