FluentCRM – Email Newsletter, Automation, Email Marketing, Email Campaigns, Optins, Leads, and CRM Solution <= 3.2.6 - Authenticated (Subscriber+) Authentication Bypass to Contact Takeover via Unverified Email Change

ID

WPSEC-2026-2099

Plugin

FluentCRM – Email Newsletter, Automation, Email Marketing, Email Campaigns, Optins, Leads, and CRM Solution (fluent-crm)

Affected

all versions before 3.3.0

Remediation

Update to 3.3.0 or later.

CVSS 3.1

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

Weakness

CWE-287

Usage

Plugin Low · Affected versions None seen among sites WPSec scans, 2026-10-30

Attack surface

FluentCRM – Email Newsletter, Automation, Email Marketing, Email Campaigns, Optins, Leads, and CRM Solution on WPSec AttackSurface

Fix released

2026-10-29

Published

2026-10-30

Description

The FluentCRM plugin for WordPress is vulnerable to an authentication bypass in all versions up to, and including, 3.2.6 due to the current contact being matched to the logged-in user by email address without requiring that email to be verified. Because WordPress users can change their own account email without confirmation, this makes it possible for authenticated attackers with subscriber-level access and above to set their email to a victim's address and take over that victim's CRM contact, including viewing and modifying its profile, preferences and personalized data.

References

• https://wpsec.com/vuln/WPSEC-2026-2099/
• https://plugins.svn.wordpress.org/fluent-crm/tags/3.3.0/
• https://wordpress.org/plugins/fluent-crm/

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