CVE-2026-75019
Received Received - Intake

Stored XSS in Cozy Blocks Page Builder for Gutenberg

Publication date: 2026-08-25

Last updated on: 2026-08-25

Assigner: Wordfence

Description
The Cozy Blocks – Page Builder for Gutenberg Editor & FSE with 700+ Patterns, 58 Blocks & Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via cozyHoverEffect Block Attribute in all versions up to, and including, 2.2.16 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 survives wp_kses_post on save because it contains no angle brackets — only a double-quote breakout of the cozyHoverEffect.boxShadow.color attribute value — allowing event-handler injection at the render stage.

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Meta Information

Published
2026-08-25
Last Modified
2026-08-25
Generated
2026-08-25
AI Q&A
2026-08-25
EPSS Evaluated
N/A
NVD
CVE-2026-75019
EUVD
EUVD-2026-65273

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
cozy_blocks page_builder to 2.2.16 (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 vulnerability is a Stored Cross-Site Scripting (XSS) flaw in the Cozy Blocks WordPress plugin. It allows authenticated attackers with contributor-level access or higher to inject malicious scripts into web pages via the cozyHoverEffect block attribute. The issue arises from insufficient input sanitization and output escaping, enabling event-handler injection without angle brackets.

Detection Guidance

Check WordPress sites using the Cozy Blocks plugin for versions up to 2.2.16. Inspect pages for injected scripts in cozyHoverEffect attributes. Use Wordfence or similar security plugins to scan for suspicious code patterns.

Impact Analysis

If exploited, this vulnerability could allow attackers to execute arbitrary scripts in a victim's browser when they access an infected page. This may lead to session hijacking, data theft, or unauthorized actions on behalf of the user. The impact depends on user privileges and the sensitivity of data processed by the WordPress site.

Compliance Impact

This vulnerability could compromise compliance with GDPR by exposing user data through script injection, leading to unauthorized access or data breaches. For HIPAA, it may risk protected health information if exploited on healthcare-related sites. Both standards require protecting against such vulnerabilities to ensure data integrity and confidentiality.

Mitigation Strategies

Update the Cozy Blocks plugin to the latest version beyond 2.2.16. Remove or restrict contributor-level access to untrusted users. Implement additional input sanitization for block attributes.

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