Landing Page Builder <= 1.5.3.6 - Cross-Site Request Forgery to ulpb_admin_data AJAX Action

4.3
Cross-Site Request Forgery (CSRF)
CVE CVE-2026-12409
CVSS 4.3 (Medium)
Publicly Published July 15, 2026
Last Updated July 16, 2026
Researcher M.Fahad Khan

Description

The Landing Page Builder – Coming Soon page, Maintenance Mode, Lead Page, WordPress Landing Pages plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.5.3.6. This is due to missing or incorrect nonce validation on the ulpb_admin_ajax function. This makes it possible for unauthenticated attackers to create, update, retitle, or change the post status, slug, and type of arbitrary posts and write ULPB_DATA post meta via a forged request granted they can trick a site administrator into performing an action such as clicking on a link. This attack requires the victim to hold an editor-level or administrator session, as the wp_ajax_ulpb_admin_data action enforces a capability check that the forged request must satisfy by inheriting the logged-in user's session cookies.

References

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Vulnerability Details for Landing Page Builder – Coming Soon page, Maintenance Mode, Lead Page, WordPress Landing Pages

Software Type Plugin
Software Slug page-builder-add (view on wordpress.org)
Patched? Yes
Remediation Update to version 1.5.3.7, or a newer patched version
Affected Version
  • <= 1.5.3.6
Patched Version
  • 1.5.3.7

Recent vulnerabilities in Landing Page Builder – Coming Soon page, Maintenance Mode, Lead Page, WordPress Landing Pages

# Title CVE ID CVSS Researchers Date
1 Landing Page Builder – Coming Soon page, Maintenance Mode, Lead Page, WordPress Landing Pages <= 1.5.3.5 - Unauthenticated Stored Cross-Site Scripting CVE-2026-57337 7.2 Nguyen Dinh Hai (HaiND) June 29, 2026
2 Landing Page Builder <= 1.5.3.4 - Authenticated (Author+) Stored Cross-Site Scripting CVE-2026-24620 6.4 SavPhill (Savphill) January 10, 2026
3 Landing Page Builder <= 1.5.2.0 - Authenticated (Editor+) Local File Inlcusion CVE-2024-43345 7.2 João G. Barbosa (4rCanJ0x!) August 16, 2024
4 Landing Page Builder <= 1.5.1.8 - Reflected Cross-Site Scripting via pageType CVE-2024-34752 6.1 Dimas Maulana May 14, 2024
5 Landing Page Builder <= 1.5.1.7 - Authenticated (Editor+) Stored Cross-Site Scripting CVE-2024-30452 4.4 Steven Julian March 28, 2024
6 Landing Page Builder <= 1.5.1.5 - Open Redirect CVE-2023-48325 4.3 minhtuanact November 23, 2023
7 Landing Page Builder <= 1.5.1.2 - Authenticated (Administrator+) Stored Cross-Site Scripting CVE-2023-40675 4.4 Rio Darmawan August 22, 2023
8 Landing Page Builder <= 1.4.9.8.9 - Authenticated (Contributor+) Cross-Site Scripting via Shortcode CVE-2022-4718 6.4 István Márton December 27, 2022
9 Landing Page Builder <= 1.4.9.5 - Reflected Cross-Site Scripting CVE-2021-25067 6.1 Krzysztof Zając December 16, 2021

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