Fluent Forms <= 6.2.14 - Unauthenticated Reflected Cross-Site Scripting via 'get' Smartcode

ID

WPSEC-2026-0006

Plugin

Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder (fluentform)

Affected

all versions before 6.2.15

Remediation

Update to 6.2.15 or later.

CVSS 3.1

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

Weakness

CWE-79

Usage

Plugin High · Affected versions High among sites WPSec scans, 2026-10-22

Attack surface

Fluent Forms on WPSec AttackSurface

Fix released

2026-09-30

Published

2026-10-01

Description

The Fluent Forms plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the {get.*} editor smartcode in all versions up to, and including, 6.2.14 due to request values being only attribute-escaped (esc_attr), which leaves javascript: and data: URL schemes intact. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. Exploitation requires a form whose Custom HTML (or another HTML-capable field) places a {get.*} smartcode inside a URL attribute such as href or an iframe src.

References

• https://wpsec.com/vuln/WPSEC-2026-0006/
• https://plugins.svn.wordpress.org/fluentform/tags/6.2.15/
• https://wordpress.org/plugins/fluentform/

Published by WPSec. Provided as is, without warranty. Corrections: contact us.

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