Vulnerabilities / Kadence Blocks / WPSEC-2026-1370
Kadence Blocks <= 3.8.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Count Up Block Prefix, Suffix and Separator
Medium 6.4
CWE-79Fixed in 3.8.0.1
- ID
- WPSEC-2026-1370
- Plugin
- Kadence Blocks — Page Builder Toolkit for Gutenberg Editor (kadence-blocks)
- Affected
- all versions before 3.8.0.1
- Remediation
- Update to 3.8.0.1 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 High · Affected versions High among sites WPSec scans, 2026-10-21
- 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 Count Up block's prefix, suffix, separator and decimal settings in all versions up to, and including, 3.8.0 due to insufficient output escaping in the front-end count-up script, which inserted these values into a screen-reader element via innerHTML and passed them unescaped to the CountUp library. 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.
References
- https://wpsec.com/vuln/WPSEC-2026-1370/
- https://plugins.svn.wordpress.org/kadence-blocks/tags/3.8.0.1/
- https://wordpress.org/plugins/kadence-blocks/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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