Cozy Blocks <= 2.2.27 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'icon.view' Block Attribute
Impact
The Cozy Blocks – Website Builder for WordPress Block Editor | Gutenberg Blocks, Patterns & Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'content (block attribute icon.view / icon.layout / icon.gap)' parameter in all versions up to, and including, 2.2.27 due to insufficient input sanitization and output escaping. 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. Although wp_kses_post is applied on save, it…
Source excerpt · WordfenceAffected packages
Affected products
Vendor version evidence. Product records are separate from automatic dependency matching.
cozythemes · Cozy Blocks – Website Builder & Business Growth Toolkit | Popups, Lead Forms & Inbox
Other versions: unaffected
| Version / range | Source status |
|---|---|
| 0 through 2.2.27 (inclusive) | affected |
Original source description
The Cozy Blocks – Website Builder for WordPress Block Editor | Gutenberg Blocks, Patterns & Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'content (block attribute icon.view / icon.layout / icon.gap)' parameter in all versions up to, and including, 2.2.27 due to insufficient input sanitization and output escaping. 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. Although wp_kses_post is applied on save, it does not neutralize a quote-only attribute-breakout payload containing no '<' character, leaving the block comment and its decoded JSON attributes intact and exploitable at render time.
References
- Security advisory www.wordfence.com/threat-intel/vulnerabilities/id/f4041795-8131-459f-9156-5ecf5d6086f6
- Source reference plugins.trac.wordpress.org/browser/cozy-addons/tags/2.2.27/blocks/featured-product-tabs/render.php
- Source reference plugins.trac.wordpress.org/browser/cozy-addons/tags/2.2.27/blocks/featured-product-tabs/render.php
- Source reference plugins.trac.wordpress.org/browser/cozy-addons/tags/2.2.27/blocks/featured-product-tabs/render.php
- Source reference plugins.trac.wordpress.org/browser/cozy-addons/tags/2.2.27/blocks/featured-product-tabs/render.php
- Source reference plugins.trac.wordpress.org/browser/cozy-addons/tags/2.2.27/blocks/featured-product-tabs/block.json
- Patch plugins.trac.wordpress.org/changeset