Stored Cross-Site Scripting in Responsive Contact Form Builder & Lead Generation Plugin for WordPress
CVE-2026-1454

7.2HIGH

Key Information:

Vendor

WordPress
Status
Lead Form Builder & Contact Form
Vendor
CVE Published:
11 March 2026

What is CVE-2026-1454?

The Responsive Contact Form Builder & Lead Generation Plugin for WordPress exhibits a vulnerability that allows stored cross-site scripting through form field submissions. Versions up to and including 2.0.1 fail to adequately sanitize input, particularly in the lfb_lead_sanitize() function, which leaves certain field types unchecked. Coupled with a permissive wp_kses() filter, this creates an opportunity for unauthenticated attackers to insert malicious scripts. As a result, when administrators view lead entries in the WordPress dashboard, these scripts may execute, compromising the security of the web environment.

Affected Version(s)

Lead Form Builder & Contact Form 0 <= 2.0.1

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/lead-form-buil...
https://plugins.trac.wordpress.org/browser/lead-form-buil...

CVSS V3.1

Score:
7.2
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Youssef Elouaer
.