What’s Vulnerable › Vulnerabilities

CVE-2026-1454: Responsive Contact Form Builder & Lead Generation Plugin <= 2.0.1 - Unauthenticated Stored Cross-Site Scripting

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-11 · updated 2026-06-17
• Weakness: CWE-79

Description

The Responsive Contact Form Builder & Lead Generation Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 2.0.1 via form field submissions. This is due to insufficient input sanitization in the lfb_lead_sanitize() function which omits certain field types from its sanitization whitelist, combined with an overly permissive wp_kses() filter at output time that allows onclick attributes on anchor tags. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever an administrator views the lead entries in the WordPress dashboard.

Affected products

• themehunk Lead Form Builder & Contact Form: through 2.0.1

References

• https://plugins.trac.wordpress.org/browser/lead-form-builder/tags/2.0.1/inc/ajax-functions.php#L587
• https://plugins.trac.wordpress.org/browser/lead-form-builder/tags/2.0.1/inc/show-lead.php#L13
• https://plugins.trac.wordpress.org/changeset/3462549/
• https://www.wordfence.com/threat-intel/vulnerabilities/id/f5863132-90a7-414f-abcb-e8b6a9d229c5?source=cve

Get alerted when CVE-2026-1454 or the next vulnerability affects your stack