The WP-Members Membership Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via WooCommerce Checkout Multicheckbox/Multiselect Field (scalar bypass of wpmem_sanitize_array) in all versions up to, and including, 3.5.7 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is only exploitable via the WooCommerce classic checkout path, as the sibling registration, profile, and account-edit handlers implode the value before sanitization, which raises a PHP 8 TypeError on scalar input and fails closed.
History

Thu, 12 Nov 2026 16:30:00 +0000

Type Values Removed Values Added
First Time appeared Cbutlerjr
Cbutlerjr wp-members Membership Plugin
Wordpress-extensions
Wordpress-extensions wp-members Membership Plugin
Vendors & Products Cbutlerjr
Cbutlerjr wp-members Membership Plugin
Wordpress-extensions
Wordpress-extensions wp-members Membership Plugin

Sun, 08 Nov 2026 06:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sat, 07 Nov 2026 11:30:00 +0000

Type Values Removed Values Added
Description The WP-Members Membership Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via WooCommerce Checkout Multicheckbox/Multiselect Field (scalar bypass of wpmem_sanitize_array) in all versions up to, and including, 3.5.7 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is only exploitable via the WooCommerce classic checkout path, as the sibling registration, profile, and account-edit handlers implode the value before sanitization, which raises a PHP 8 TypeError on scalar input and fails closed.
Title WP-Members Membership Plugin <= 3.5.7 - Authenticated (Subscriber+) Stored Cross-Site Scripting via WooCommerce Checkout Multicheckbox/Multiselect Field
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published: 2026-11-07T11:26:27.608Z

Updated: 2026-11-07T18:06:01.374Z

Reserved: 2026-09-23T13:18:47.831Z

Link: CVE-2026-96565

cve-icon Vulnrichment

Updated: 2026-11-07T18:00:01.049Z

cve-icon NVD

Status : Deferred

Published: 2026-11-07T12:17:47.607

Modified: 2026-11-07T18:17:30.127

Link: CVE-2026-96565

cve-icon Redhat

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