CVE-2026-3896

Description

The Livemesh SiteOrigin Widgets plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `lsow_admin_ajax` AJAX action in all versions up to, and including, 3.9.2 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/livemesh-siteorigin-widgets/tags/3.9.2/admin/admin-ajax.php#L65
• https://plugins.trac.wordpress.org/browser/livemesh-siteorigin-widgets/tags/3.9.2/admin/views/settings.php#L107
• https://plugins.trac.wordpress.org/browser/livemesh-siteorigin-widgets/tags/3.9.2/includes/helper-functions.php#L235
• https://www.wordfence.com/threat-intel/vulnerabilities/id/a1510984-571b-49ce-9e10-129e2a1aca7b?source=cve