Custom Payment Gateways for WooCommerce <= 2.1.0 - Unauthenticated Stored Cross-Site Scripting via 'alg_wc_cpg_input_fields' Parameter

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7.2
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2026-7517
CVSS 7.2 (High)
Publicly Published June 30, 2026
Last Updated July 1, 2026
Researcher Azril Fathoni (kiseki) - Heroes Cyber Security

Description

The Custom Payment Gateways for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'alg_wc_cpg_input_fields' parameter in all versions up to, and including, 2.1.0 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 vulnerability is exploitable by unauthenticated guest users submitting a crafted checkout POST request, requiring no custom input fields to be configured in the plugin.

Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.

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Vulnerability Details for Custom Payment Gateways for WooCommerce

Custom Payment Gateways for WooCommerce

Software Type Plugin
Software Slug custom-payment-gateways-woocommerce (view on wordpress.org)
Patched? Yes
Remediation Update to version 2.2.0, or a newer patched version
Affected Version
  • <= 2.1.0
Patched Version
  • 2.2.0

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