CVE-2026-3895

Description

The WPBakery Page Builder Addons by Livemesh plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `lvca_admin_ajax` AJAX action in all versions up to, and including, 3.9.4 due to missing authorization checks and insufficient input sanitization. The AJAX handler verifies a nonce but does not check user capabilities. This makes it possible for authenticated attackers with Subscriber-level access and above to modify plugin settings and inject malicious scripts that execute when administrators access the plugin settings page or when any user visits the frontend.

References

• https://plugins.trac.wordpress.org/browser/addons-for-visual-composer/tags/3.9.4/admin/admin-ajax.php#L64
• https://plugins.trac.wordpress.org/browser/addons-for-visual-composer/tags/3.9.4/admin/views/settings.php#L568
• https://plugins.trac.wordpress.org/browser/addons-for-visual-composer/tags/3.9.4/includes/helper-functions.php#L256
• https://www.wordfence.com/threat-intel/vulnerabilities/id/ff0d4000-020b-4e22-9362-a8f0f5df321e?source=cve