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CVE-2026-3896— Livemesh SiteOrigin Widgets <= 3.9.2 - Missing Authorization to Authenticated (Subscriber+) Stored Cross-Site Scripting

CVSS 6.4 · Medium EPSS 0.03% · P8

Possible ATT&CK Techniques 1AI

T1059.007 · JavaScript

Affected Version Matrix 1

VendorProductVersion RangeStatus
livemeshLivemesh SiteOrigin Widgets≤ 3.9.2affected
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I. Basic Information for CVE-2026-3896

Vulnerability Information
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Vulnerability Title
Livemesh SiteOrigin Widgets <= 3.9.2 - Missing Authorization to Authenticated (Subscriber+) Stored Cross-Site Scripting
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制缺失
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
livemeshLivemesh SiteOrigin Widgets 0 ~ 3.9.2 -

II. Public POCs for CVE-2026-3896

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III. Intelligence Information for CVE-2026-3896

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Patches & Fixes for CVE-2026-3896 (2)

News Coverage for CVE-2026-3896 (1)

Same Patch Batch · livemesh · 2026-05-27 · 4 CVEs total

CVE-2026-38956.4 MEDIUMWPBakery Page Builder Addons by Livemesh <= 3.9.4 - Missing Authorization to Authenticated
CVE-2026-38976.4 MEDIUMLivemesh Addons for Beaver Builder <= 3.9.2 - Authenticated (Subscriber+) Stored Cross-Sit
CVE-2026-20306.4 MEDIUMWPBakery Page Builder Addons by Livemesh <= 3.9.4 - Authenticated (Contributor+) Stored Cr

IV. Related Vulnerabilities

Same product: Livemesh SiteOrigin Widgets
Same vendor: livemesh
Same weakness: CWE-862

V. Comments for CVE-2026-3896

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