Formidable Form Builder < 2.05.03 - Reflected Cross-Site Scripting

6.1
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSS 6.1 (Medium)
Publicly Published November 13, 2017
Last Updated January 22, 2024
Researcher Jouko Pynnöne

Description

The Formidable Form Builder plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'before_html' parameter passed through the frm_forms_preview AJAX action in versions before 2.05.03 due to insufficient input sanitization and output escaping. This makes it possible for attackers to inject arbitrary web scripts that execute in a victim's browser whenever they successfully trick a victim into performing an action like clicking on a link.

Wordfence blocked 37 attacks targeting this vulnerability in the past 24 hours.

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Vulnerability Details for Formidable Forms – Contact Form Plugin, Survey, Quiz, Payment, Calculator Form & Custom Form Builder

Software Type Plugin
Software Slug formidable (view on wordpress.org)
Patched? Yes
Remediation Update to version 2.05.03, or a newer patched version
Affected Version
  • < 2.05.03
Patched Version
  • 2.05.03

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