Description
The Formidable Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple parameters submitted during form entries like 'after_html' in versions before 2.05.03 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute in a victim's browser.
Published: 2024-10-16
Score: 8.3 High
EPSS: 28.7% Moderate
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2017-18910 The Formidable Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple parameters submitted during form entries like 'after_html' in versions before 2.05.03 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute in a victim's browser.
History

Tue, 23 Dec 2025 16:00:00 +0000

Type Values Removed Values Added
First Time appeared Strategy11 formidable Form Builder
CPEs cpe:2.3:a:strategy11:formidable_form_builder:*:*:*:*:*:wordpress:*:*
Vendors & Products Strategy11 formidable Form Builder

Sat, 12 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00251}

epss

{'score': 0.00279}


Wed, 16 Oct 2024 18:15:00 +0000

Type Values Removed Values Added
First Time appeared Strategy11
Strategy11 formidable Forms
CPEs cpe:2.3:a:strategy11:formidable_forms:*:*:*:*:*:wordpress:*:*
Vendors & Products Strategy11
Strategy11 formidable Forms
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 16 Oct 2024 07:00:00 +0000

Type Values Removed Values Added
Description The Formidable Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple parameters submitted during form entries like 'after_html' in versions before 2.05.03 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute in a victim's browser.
Title Formidable Form Builder < 2.05.03 - Unauthenticated Stored Cross-Site Scripting
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 8.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L'}


Subscriptions

Strategy11 Formidable Form Builder Formidable Forms
cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-04-08T17:06:41.683Z

Reserved: 2024-10-15T17:54:31.373Z

Link: CVE-2017-20192

cve-icon Vulnrichment

Updated: 2024-10-16T17:40:10.323Z

cve-icon NVD

Status : Analyzed

Published: 2024-10-16T07:15:05.147

Modified: 2025-12-23T15:47:33.233

Link: CVE-2017-20192

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses