CVE-2026-109978
Received Received - Intake

Stored XSS in Cozy Blocks WordPress Plugin

Publication date: 2026-10-28

Last updated on: 2026-10-28

Assigner: Wordfence

Description
The Cozy Blocks – Website Builder for WordPress Block Editor | Gutenberg Blocks, Patterns & Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'productRating.iconColor' parameter in all versions up to, and including, 2.2.27 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 vulnerable code path is only reached when the productRating option is enabled and the associated WooCommerce product has a non-zero rating.

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Meta Information

Published
2026-10-28
Last Modified
2026-10-28
Generated
2026-10-28
AI Q&A
2026-10-28
EPSS Evaluated
N/A
NVD
CVE-2026-109978
EUVD
EUVD-2026-111743

Affected Vendors & Products

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 vulnerability is a Stored Cross-Site Scripting (XSS) issue in the Cozy Blocks WordPress plugin. It allows authenticated attackers with contributor-level access or higher to inject malicious scripts via the 'productRating.iconColor' parameter. The flaw exists due to insufficient input sanitization and output escaping in versions up to 2.2.27.

Detection Guidance

Detection requires checking if the Cozy Blocks plugin is installed and verifying its version. Inspect WordPress admin for the plugin and confirm if it is version 2.2.27 or lower. No specific commands are provided in the context.

Impact Analysis

An attacker could inject scripts that execute when users visit affected pages. This may lead to unauthorized actions on behalf of users, data theft, or defacement of your website. The attack requires contributor-level access but can affect all visitors to compromised pages.

Compliance Impact

This vulnerability could lead to data breaches or unauthorized access, violating GDPR and HIPAA requirements for data protection and user privacy. Non-compliance may result in legal penalties, reputational damage, and loss of trust.

Mitigation Strategies

Immediately update the Cozy Blocks plugin to the latest version beyond 2.2.27. If updating is not possible, disable the plugin or remove it entirely. Ensure input sanitization is enforced for the 'productRating.iconColor' parameter.

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