UiChemy <= 5.2.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Composer Section Code
- ID
- WPSEC-2026-0126
- Plugin
- UiChemy – Convert Figma, Prompts and AI Builds to Elementor, Gutenberg and Bricks (uichemy)
- Affected
- from 5.1.0 before 5.2.3
- Remediation
- Update to 5.2.3 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, 2026-10-22
- Attack surface
- UiChemy on WPSec AttackSurface
- Fix released
- Published
Description
The UiChemy plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Composer section code (HTML, CSS and JavaScript) in versions 5.1.0 up to, and including, 5.2.2. The front-end editor REST endpoints (/wp-json/uichemy/v1/frontend/section and /frontend/insert) store the submitted code verbatim, without checking whether the user has the unfiltered_html capability, and the section renderer outputs it unescaped (JavaScript inside a script tag, CSS inside a style tag). In the free version every role with edit_posts may use the Composer by default. This makes it possible for authenticated attackers with Contributor-level access and above to inject arbitrary web scripts into posts they can edit, which execute whenever a user accesses an injected page.
References
- https://wpsec.com/vuln/WPSEC-2026-0126/
- https://plugins.svn.wordpress.org/uichemy/tags/5.2.3/
- https://wordpress.org/plugins/uichemy/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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