Description
The Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the className, classHook, and blockId attributes in the Add to Cart block (essential-blocks/add-to-cart) in all versions up to, and including, 6.0.4. This is due to insufficient output escaping in the render_callback() function where these attributes are placed into class and data-id HTML attributes using raw sprintf() and implode() without esc_attr() escaping. While the outer wrapper div uses get_block_wrapper_attributes() which properly escapes, the inner divs do not. 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.
INFO
Published Date :
2026-05-02T04:27:44.707Z
Last Modified :
2026-05-04T16:03:39.376Z
Source :
Wordfence
AFFECTED PRODUCTS
The following products are affected by CVE-2026-4658 vulnerability.
| Vendors | Products |
|---|---|
| Wordpress |
|
| Wpdevteam |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2026-4658.
