CVE-2026-15333
Received Received - Intake

Stored XSS in Cozy Blocks Page Builder for Gutenberg

Publication date: 2026-07-24

Last updated on: 2026-07-24

Assigner: Wordfence

Description
The Cozy Blocks – Page Builder for Gutenberg Editor & FSE with 600+ Patterns, 58 Blocks & Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'cozyCustomFont' Block Attribute in all versions up to, and including, 2.2.11 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.

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Meta Information

Published
2026-07-24
Last Modified
2026-07-24
Generated
2026-07-24
AI Q&A
2026-07-24
EPSS Evaluated
N/A
NVD
CVE-2026-15333
EUVD
EUVD-2026-48505

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
cozy_blocks page_builder to 2.2.11 (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 'cozyCustomFont' block attribute. The issue arises due to insufficient input sanitization and output escaping, enabling script execution when users view the affected pages.

Impact Analysis

If you use the Cozy Blocks plugin, attackers could steal cookies, session tokens, or other sensitive data from users. They might also perform actions on behalf of users, deface your website, or redirect visitors to malicious sites. The impact depends on user privileges and the nature of the injected scripts.

Compliance Impact

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

Mitigation Strategies

Update the Cozy Blocks plugin to the latest version beyond 2.2.11 to address the insufficient input sanitization and output escaping issues. Remove or disable the plugin if updates are unavailable.

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