---
id: CVE-2026-93836
title: >-
  The WPC Product Bundles for WooCommerce plugin for WordPress is vulnerable to
  Stored Cross-Site Scripting via the 'qty' parameter in all versions up to, and
  including, 8.6.6 due to insufficient input sanitization and output escaping
summary: >-
  The WPC Product Bundles for WooCommerce plugin for WordPress is vulnerable to
  Stored Cross-Site Scripting via the 'qty' parameter in all versions up to, and
  including, 8.6.6 due to insufficient input sanitization and output escaping.
  Thi…
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 Bundles for WooCommerce
affected:
  - wpc_product_bundles_for_woocommerce <= 8.6.6
published: '2026-09-22'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T19:04:55.677'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93836'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/woo-product-bundle/tags/8.6.5/includes/class-backend.php#L1949
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/woo-product-bundle/tags/8.6.5/includes/class-woosb.php#L1197
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/woo-product-bundle/tags/8.6.5/includes/class-woosb.php#L579
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/woo-product-bundle/tags/8.6.5/includes/class-woosb.php#L584
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&old=3702892%40woo-product-bundle&new=3702892%40woo-product-bundle
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/fc620054-00ed-4c2e-9448-b40ae28efff3?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-22T10:07:54.238433Z'
ingestedAt: '2026-09-22T08:00:27.688Z'
epss: 0.00399
epssPercentile: 0.31382
---

## Overview

The WPC Product Bundles for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'qty' parameter in all versions up to, and including, 8.6.6 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. The float cast used during quantity validation allows a numeric-prefixed payload such as '1<img src=x onerror=...>' to pass validation while retaining its malicious HTML, which is then stored verbatim in order item metadata under the '_woosb_ids' key.

## Remediation

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