Gutenberg WooCommerce Builder Blocks for ShopEngine, Variation Swatches, Wishlist, Products Compare <= 2.4.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'font_link' Parameter

ID

WPSEC-2026-2259

Plugin

ShopEngine Gutenberg WooCommerce Builder Blocks Addon – All in One WooCommerce Solution (blocks-for-shopengine)

Affected

all versions before 2.4.4

Remediation

Update to 2.4.4 or later.

CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Weakness

CWE-79

Usage

Plugin Low · Affected versions Low among sites WPSec scans, 2026-11-03

Attack surface

Gutenberg WooCommerce Builder Blocks for ShopEngine, Variation Swatches, Wishlist, Products Compare on WPSec AttackSurface

Fix released

2026-11-02

Published

2026-11-03

Description

The ShopEngine Gutenberg WooCommerce Builder Blocks Addon plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'font_link' parameter of the gutenova_store_css AJAX action in all versions up to, and including, 2.4.3 due to insufficient output escaping when the stored gutenova_font_link post meta is placed inside a double-quoted JavaScript string in the block editor's inline script. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts that execute whenever a user, such as an administrator, opens the affected post in the block editor.

References

• https://wpsec.com/vuln/WPSEC-2026-2259/
• https://plugins.svn.wordpress.org/blocks-for-shopengine/tags/2.4.4/
• https://wordpress.org/plugins/blocks-for-shopengine/

Published by WPSec. Provided as is, without warranty. Corrections: contact us.

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