Responsive Contact Form Builder & Lead Generation Plugin <= 2.0.1 - Unauthenticated Stored Cross-Site Scripting
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-1454
- 2026-10-03 Alias added: GHSA-29p4-76cr-8wvw
References
Other 4
- 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/
More themehunk vulnerabilities
- TI-2024-11108 Hunk Companion < 1.9.0 - Unauthenticated Plugin Installation CVSS 3.1CRITICAL 9.8
- TI-2024-08412 Code injection in themehunk WP Popup Builder – Popup Forms and Marketing Lead Generation CVSS 3.1CRITICAL 9.8
- TI-2024-09385 Improper access control in themehunk Vayu Blocks – Website Builder for the Block Editor CVSS 3.1CRITICAL 9.8
- TI-2024-09004 Hunk Companion <= 1.8.4 - Missing Authorization to Unauthenticated Arbitrary Plugin Installation/Activation CVSS 3.1CRITICAL 9.8
- TI-2024-03392 Responsive Contact Form Builder & Lead Generation Plugin <= 1.8.9 - Admin+ Stored XSS CVSS 3.1MEDIUM 6.1
- TI-2022-02219 WP Popup Builder < 1.2.9 - Reflected Cross-Site Scripting CVSS 3.1MEDIUM 6.1
Sources
- CVE-2026-1454 · CVE Program
- CVE-2026-1454 · NVD
- FIRST EPSS
- GHSA-29p4-76cr-8wvw · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences