Kadence Blocks <= 3.8.0.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Advanced Gallery Lightbox Link Attributes
- ID
- WPSEC-2026-1560
- Plugin
- Kadence Blocks — Page Builder Toolkit for Gutenberg Editor (kadence-blocks)
- Affected
- all versions before 3.8.0.2
- Remediation
- Update to 3.8.0.2 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- Weakness
- CWE-79
- Usage
- Plugin High · Affected versions High among sites WPSec scans, 2026-10-23
- Attack surface
- Kadence Blocks on WPSec AttackSurface
- Fix released
- Published
Description
The Kadence Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Advanced Gallery lightbox in all versions up to, and including, 3.8.0.1, due to the front-end gallery lightbox script passing the title, data-title, data-description, data-glightbox and other data-* attributes of gallery item links to GLightbox without sanitization or escaping, which renders them as HTML. 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 and opens the gallery lightbox.
References
- https://wpsec.com/vuln/WPSEC-2026-1560/
- https://plugins.svn.wordpress.org/kadence-blocks/tags/3.8.0.2/
- https://wordpress.org/plugins/kadence-blocks/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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