CVE-2026-97660
Received Received - Intake

Stored XSS in WPC Product Options for WooCommerce Plugin

Publication date: 2026-10-03

Last updated on: 2026-10-03

Assigner: Wordfence

Description
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.

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Meta Information

Published
2026-10-03
Last Modified
2026-10-03
Generated
2026-10-03
AI Q&A
2026-10-03
EPSS Evaluated
N/A
NVD
CVE-2026-97660
EUVD
EUVD-2026-91952

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
wpclever wpc_product_options_for_woocommerce to 4.0.5 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This is a Stored Cross-Site Scripting (XSS) vulnerability in the WPC Product Options for WooCommerce plugin for WordPress. It allows unauthenticated attackers to inject malicious scripts into web pages by exploiting insufficient input sanitization and output escaping in multipart field names starting with 'wpcpo-'. The payload is stored in order item meta and executes when a user accesses the affected page.

Detection Guidance

This vulnerability is specific to the WPC Product Options for WooCommerce plugin. Detection requires checking for the presence of the plugin and its version. Inspect WordPress installations for the plugin directory 'wpc-product-options-for-woocommerce' and verify versions up to 4.0.5. No direct network commands detect this; manual plugin inspection is required.

Impact Analysis

An attacker could steal sensitive user data like cookies or session tokens, deface websites, or redirect users to malicious sites. Since it requires no authentication, any visitor to an infected page could be compromised. Guest checkout users are particularly at risk as the attack can occur without login.

Compliance Impact

This vulnerability could lead to data breaches, violating GDPR's data protection requirements and HIPAA's safeguards for protected health information. Organizations may face fines, legal action, and reputational damage if user data is compromised through this exploit.

Mitigation Strategies

Immediately update the WPC Product Options for WooCommerce plugin to the latest version beyond 4.0.5. If an update is unavailable, consider disabling or removing the plugin until a patch is released. Monitor WordPress admin panels for unauthorized changes or suspicious scripts.

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