CVE-2017-20192

published 2024-10-16

CVE-2017-20192: The Formidable Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple parameters submitted during form entries like…

Priority P1 80 medium 6.1 CVSS 3.1

AV N AC L PR N UI R S C C L I L A N

ITW EXPLOIT VulnCheck KEV

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.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
strategy11	formidable_form_builder	< 2.05.03	2.05.03

Detection & IOCs extracted from sources · hover to see the quote

other <img src=x onerror=alert(document.domain)

• → HTTP response status code is 200 and Content-Type header contains 'text/html' and body contains the XSS payload string '<img src=x onerror=alert(document.domain)' — indicative of a successful stored XSS injection via Formidable Form Builder plugin parameters such as 'after_html'.

• · Vulnerability affects Formidable Form Builder for WordPress versions before 2.05.03; unauthenticated attackers can inject via form entry parameters such as 'after_html'. Ensure detection covers unauthenticated POST requests to form submission endpoints. ↗

CVSS provenance

nvd v3.1 6.1 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

vulncheck 8.3 HIGH

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