MaxiBlocks Free Page Builder & Template Library, CVE-2026-6378
- CVE, Research URL
- Published on
- May 02, 2026
- Research Description
- The Maxi Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `/wp-json/maxi-blocks/v1.0/style-card` REST API endpoint in all versions up to, and including, 2.1.9 due to insufficient input sanitization and output escaping of the `sc_styles` parameter. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts that execute on every page where the plugin's style card styles are loaded, including across the entire WordPress admin panel.
- Affected versions
-
max 2.1.10.
- Status
-
vulnerable