CVE-2026-2573

Name of the Vulnerable Software and Affected Versions GutenKit – Page Builder Blocks, Patterns, and Templates for Gutenberg Block Editor versions prior to 2.4.5

Description Stored Cross-Site Scripting occurs due to insufficient input sanitization and output escaping. Authenticated attackers with Contributor-level access and above can inject arbitrary web scripts through the postBodyCss parameter. These scripts execute whenever a user accesses an affected page.

Recommendations Update the plugin to version 2.4.5 or later. As a temporary mitigation, restrict access to the postBodyCss parameter for users with Contributor-level permissions.