---
id: CVE-2026-97660
title: >-
  The WPC Product Options for WooCommerce plugin for WordPress is vulnerable to
  Stored Cross-Site Scripting via wpcpo-* Array Key via Multipart Field Name in
  all versions up to, and including, 4.0.5 due to insufficient input
  sanitization a…
summary: >-
  The WPC Product Options for WooCommerce plugin for WordPress is vulnerable to
  Stored Cross-Site Scripting via wpcpo-* Array Key via Multipart Field Name in
  all versions up to, and including, 4.0.5 due to insufficient input
  sanitization a…
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: wpclever
product: WPC Product Options for WooCommerce
affected:
  - wpc_product_options_for_woocommerce <= 4.0.5
published: '2026-10-03'
updated: '2026-10-03'
sourceUpdated: '2026-10-03T07:16:49.530'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97660'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/wpc-product-options/tags/4.0.5/includes/class-cart.php#L336
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wpc-product-options/tags/4.0.5/includes/class-cart.php#L537
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wpc-product-options/tags/4.0.5/includes/class-cart.php#L573
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wpc-product-options/tags/4.0.5/includes/class-cart.php#L579
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wpc-product-options/tags/4.0.5/includes/class-cart.php#L792
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&old=3712354%40wpc-product-options&new=3712354%40wpc-product-options
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/13a52c43-c14c-4322-9191-297e6c647d92?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-03T07:40:49.057Z'
---

## Overview

The WPC Product Options for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via wpcpo-* Array Key via Multipart Field Name in all versions up to, and including, 4.0.5 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is exploitable via guest checkout without authentication because the malicious payload is embedded in a multipart Content-Disposition field name beginning with 'wpcpo-', which PHP's RFC1867 parser preserves byte-for-byte and stores into order item meta.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.