CVE-2026-96565

WP-Members Membership Plugin <= 3.5.7 - Authenticated (Subscriber+) Stored Cross-Site Scripting via WooCommerce Checkout Multicheckbox/Multiselect Field

Published Nov 7, 2026 CVSS 3.1 · 6.4 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
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
Type Values Removed Values Added
Metrics ssvc

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

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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Wordfence
Published
Updated
Nov 7, 2026, 6:06 PM
Reserved
Sep 23, 2026, 1:18 PM
Status
Deferred
Published
Nov 7, 2026, 12:17 PM
Modified
Nov 7, 2026, 6:17 PM