CVE-2026-3896

medium

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://www.wordfence.com/threat-intel/vulnerabilities/id/a1510984-571b-49ce-9e10-129e2a1aca7b?source=cve

https://plugins.trac.wordpress.org/browser/livemesh-siteorigin-widgets/tags/3.9.2/includes/helper-functions.php#L235

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/admin/admin-ajax.php#L65

Details

Source: Mitre, NVD

Published: 2026-05-27

Updated: 2026-05-27

Risk Information

CVSS v2

Base Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.4

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Severity: Medium

EPSS

EPSS: 0.00026