What the vulnerability does
01Description
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.
Explanation of Vulnerability in Simple Terms
02Summary
Cozy Blocks allows authenticated users to inject malicious scripts that execute in other users' browsers. The vulnerability exists in versions up to 2.2.11 and affects the page builder's handling of user input. An attacker with low-level site access can craft payloads that compromise other users' sessions or steal sensitive data. Update to a version newer than 2.2.11.
What an attacker can do
03Attacker Capabilities
Inject JavaScript that runs in other users' browsers and steals their session data or credentials.
Potential impact on your site
04Site Impact
Authenticated attackers can compromise other users' accounts and access sensitive site data without admin intervention.
Conditions required to exploit
05Prerequisites
Attacker needs a low-privilege account (e.g., contributor or editor role) on the WordPress site.
Key dates
06Disclosure timeline
July 24, 2026
CVE published
