# CVE-2026-18062: StellarWP Kadence Blocks Stored XSS in Identity Block

Source: https://junglewise.ai/threats/cve-2026-18062-stellarwp-kadence-blocks-stored-xss-in-identity-block  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-01. Updated: 2026-08-01  
License: CC BY 4.0 with a link back

CVE-2026-18062 · Severity: medium · CVSS 6.4 · Published 2026-08-01

Kadence Blocks is a popular WordPress plugin used to enhance the website building experience. A security flaw in the plugin's Identity Block allows users with contributor-level access or higher to embed malicious scripts into web pages. When other users, including site administrators or visitors, view these pages, the scripts can execute in their browsers, potentially leading to unauthorized actions or data theft.

Technologies: [StellarWP Kadence Blocks — Page Builder Toolkit for Gutenberg Editor](https://junglewise.ai/threats/technologies/kadence-blocks). Vendors: [StellarWP](https://junglewise.ai/threats/vendors/stellarwp).

## Quick answers

**Is CVE-2026-18062 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-18062 being exploited in the wild.

**How severe is CVE-2026-18062?** Medium severity, with a CVSS score of 6.4, published 1 August 2026.

**Which products and versions are affected?** StellarWP Kadence Blocks — Page Builder Toolkit for Gutenberg Editor up to, and including, 3.7.8.1.

**Is there a fix for CVE-2026-18062?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-18062 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-18062?** Check whether you run StellarWP Kadence Blocks — Page Builder Toolkit for Gutenberg Editor at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The Kadence Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) due to insufficient input sanitization and output escaping on the Identity Block's inner image content. This vulnerability is specifically located within the build_html() function of the class-kadence-blocks-identity-block.php file. An attacker with at least contributor-level authentication can exploit this by injecting arbitrary web scripts into a page, provided the block's 'urlTransparent' attribute is set to a non-empty value. When a victim views the affected page, the malicious script executes within the context of their browser session. The issue is addressed in versions following 3.7.8.1.

## Affected products

- StellarWP Kadence Blocks — Page Builder Toolkit for Gutenberg Editor up to, and including, 3.7.8.1

## Timeline

- 2026-08-01: disclosed
- 2026-08-01: advisory

## References

- [https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.2/includes/blocks/class-kadence-blocks-identity-block.php](https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.2/includes/blocks/class-kadence-blocks-identity-block.php)
- [https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.2/includes/blocks/class-kadence-blocks-identity-block.php](https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.2/includes/blocks/class-kadence-blocks-identity-block.php)
- [https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.2/includes/blocks/class-kadence-blocks-identity-block.php](https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.2/includes/blocks/class-kadence-blocks-identity-block.php)
- [https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.8/includes/blocks/class-kadence-blocks-identity-block.php](https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.8/includes/blocks/class-kadence-blocks-identity-block.php)
- [https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.8/includes/blocks/class-kadence-blocks-identity-block.php](https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.8/includes/blocks/class-kadence-blocks-identity-block.php)
- [https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.8/includes/blocks/class-kadence-blocks-identity-block.php](https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.7.8/includes/blocks/class-kadence-blocks-identity-block.php)
- [https://plugins.trac.wordpress.org/changeset?reponame=&old=3627652%40kadence-blocks&new=3627652%40kadence-blocks](https://plugins.trac.wordpress.org/changeset?reponame=&old=3627652%40kadence-blocks&new=3627652%40kadence-blocks)

## Related threats

- [StellarWP Kadence Blocks stored XSS in toggleIcon attribute](https://junglewise.ai/threats/cve-2026-18435-stellarwp-kadence-blocks-stored-xss-in-toggleicon-attribute)
- [Kadence WP Gutenberg Blocks unauthorized post publication in REST API](https://junglewise.ai/threats/cve-2026-15286-kadence-wp-gutenberg-blocks-unauthorized-post-publication-in-rest)
- [StellarWP Kadence Blocks authorization bypass in prebuilt library](https://junglewise.ai/threats/cve-2026-12902-stellarwp-kadence-blocks-authorization-bypass-in-prebuilt-library)
- [StellarWP Kadence Blocks authorization bypass in process_pattern REST API](https://junglewise.ai/threats/cve-2026-2826-stellarwp-kadence-blocks-authorization-bypass-in-process-pattern)