CVE-2026-6378 – Maxi Blocks <= 2.1.9 - Authenticated (Author+) Stored Cross-Site Scripting via Style Card REST API

CVE ID :CVE-2026-6378

Published : May 2, 2026, 3:36 a.m. | 42 minutes ago

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.

Severity: 0.0 | NA

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