CVE-2026-3896: Livemesh Siteorigin Widgets

Medium severity, CVSS 6.4. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Livemesh Livemesh Siteorigin Widgets: up to and including 3.9.2

Published 2026-05-27. Last modified 2026-06-17.