---
id: "CVE-2026-96565"
page: "https://infrastack.ai/live/CVE-2026-96565"
kind: "vulnerability"
aliases: ["CVE-2026-96565"]
title: "WP-Members Membership plugin: stored XSS via WooCommerce checkout fields"
severity: "medium"
cvss: 6.4
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["package", "self-hosted", "woocommerce", "wordpress", "wp-members"]
not_affected_if: ["no-woocommerce", "no-wp-members", "version-above-3.5.7"]
published_at: "2026-11-07T12:17:47+00:00"
first_seen_at: "2026-11-07T12:47:09+00:00"
updated_at: "2026-11-07T12:49:02+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-96565", "first_seen_at": "2026-11-07T12:47:09+00:00"}]
exploit_sources: []
---

# WP-Members Membership plugin: stored XSS via WooCommerce checkout fields

Link for people: https://infrastack.ai/live/CVE-2026-96565 (this .md is for agents)

The WP-Members Membership plugin for WordPress, in versions up to and including 3.5.7, does not sanitize or escape a WooCommerce classic checkout multicheckbox/multiselect field. An authenticated subscriber can store scripts that run in the browser of any user who opens the affected page.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed version of the WP-Members Membership plugin in the WordPress admin plugin list, or in `wp-content/plugins/wp-members/`, and see whether it is `3.5.7` or older.
- Confirm whether WooCommerce is active and whether the checkout uses the classic checkout path with WP-Members fields.

## Fix

- WP-Members Membership plugin: move to a version later than `3.5.7` (the fixed version is not named in the sources).

## Timeline

- 2026-11-07T12:47:09+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-96565

## From the sources

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.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_