Description
The Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's widgets in all versions up to, and including, 4.5.3 due to insufficient input sanitization and output escaping on user supplied attributes such as listStyle. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
wpdevteam Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns
Default version status: unaffected
0 to ≤ 4.5.3affected
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/cfcd59ae-085f-47d2-a4d2-2d1239f035d2?source=cve ↗
- https://plugins.trac.wordpress.org/browser/essential-blocks/tags/4.5.2/blocks/TableOfContents.php#L120 ↗
- https://plugins.trac.wordpress.org/changeset/3053199/essential-blocks/trunk/blocks/TableOfContents.php ↗