---
id: CVE-2026-17571
title: >-
  The Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational
  Form Builder plugin for WordPress is vulnerable to Reflected Cross-Site
  Scripting via 'param' in all versions up to, and including, 6.2.8 due to
  insufficient i…
summary: >-
  The Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational
  Form Builder plugin for WordPress is vulnerable to Reflected Cross-Site
  Scripting via 'param' in all versions up to, and including, 6.2.8 due to
  insufficient i…
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
published: '2026-08-01'
updated: '2026-08-01'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-17571'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.8/app/Modules/Component/Component.php#L1452
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.8/app/Modules/Component/Component.php#L1456
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset/3625751/fluentform/trunk/app/Modules/Component/Component.php
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?old_path=%2Ffluentform/tags/6.2.8&new_path=%2Ffluentform/tags/6.2.9
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/547008fe-2585-4089-a710-71a83ae3d829?source=cve
    label: security@wordfence.com
tags:
  - nvd
epss: 0.00368
epssPercentile: 0.27888
ingestedAt: '2026-08-02T05:17:48.493Z'
---

## Overview

The Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via 'param' in all versions up to, and including, 6.2.8 due to insufficient input sanitization and output escaping. 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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.