Vulnerabilities / Ghost Kit – Page Builder Blocks, Motion Effects & Extensions / WPSEC-2026-1639
Ghost Kit – Page Builder Blocks, Motion Effects & Extensions <= 3.7.2 - Authenticated (Administrator+) Stored Cross-Site Scripting via Global Custom JavaScript
Medium 4.4
CWE-79Fixed in 3.8.0
- ID
- WPSEC-2026-1639
- Plugin
- Block Animations, Motion & Scroll Effects – Ghost Kit (ghostkit)
- Affected
- all versions before 3.8.0
- Remediation
- Update to 3.8.0 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
- Weakness
- CWE-79
- Usage
- Plugin Low · Affected versions Low among sites WPSec scans, 2026-10-25
- Attack surface
- Ghost Kit – Page Builder Blocks, Motion Effects & Extensions on WPSec AttackSurface
- Fix released
- Published
Description
The Ghost Kit plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the update_custom_code REST API route in all versions up to, and including, 3.7.2, due to a missing unfiltered_html capability check when saving the global head and footer JavaScript, which is printed unescaped on every page. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts that execute whenever a user visits the site. This only affects multi-site installations and installations where unfiltered_html has been disabled.
References
- https://wpsec.com/vuln/WPSEC-2026-1639/
- https://plugins.svn.wordpress.org/ghostkit/tags/3.8.0/
- https://wordpress.org/plugins/ghostkit/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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