---
id: CVE-2026-76128
title: >-
  The eCommerce Product Catalog plugin for WordPress is vulnerable to Stored
  Cross-Site Scripting via 'style' Shortcode Attribute in all versions up to,
  and including, 3.5.10 due to insufficient input sanitization and output
  escaping
summary: >-
  The eCommerce Product Catalog plugin for WordPress is vulnerable to Stored
  Cross-Site Scripting via 'style' Shortcode Attribute in all versions up to,
  and including, 3.5.10 due to insufficient input sanitization and output
  escaping. This…
severity: medium
cvss: 6.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
published: '2026-08-25'
updated: '2026-09-28'
sourceUpdated: '2026-09-28T23:10:00.143'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-76128'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/ecommerce-product-catalog/tags/3.5.9/ic/simple-formbuilder/pluggable.php#L840
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ecommerce-product-catalog/tags/3.5.9/ic/simple-formbuilder/pluggable.php#L842
    label: security@wordfence.com
  - url: 'https://plugins.trac.wordpress.org/changeset/3656358/'
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/bb2778ee-f875-4494-ad42-fccc7b38d692?source=cve
    label: security@wordfence.com
tags:
  - nvd
ingestedAt: '2026-09-28T23:23:00.547Z'
---

## Overview

The eCommerce Product Catalog plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'style' Shortcode Attribute in all versions up to, and including, 3.5.10 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The payload bypasses WordPress's save-time wp_kses_post sanitization because the malicious content is stored inside shortcode brackets with no HTML tags; the tainted HTML output is only generated at render time by the shortcode handler.

## Remediation

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