# CVE-2026-15286: Kadence WP Gutenberg Blocks unauthorized post publication in REST API

Source: https://junglewise.ai/threats/cve-2026-15286-kadence-wp-gutenberg-blocks-unauthorized-post-publication-in-rest  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-10. Updated: 2026-07-10  
License: CC BY 4.0 with a link back

CVE-2026-15286 · Severity: medium · CVSS 4.3 · Published 2026-07-10

The Kadence Blocks plugin for WordPress, which provides advanced page-building features, contains a security flaw that allows lower-level users to bypass editorial controls. Normally, contributors must have their work reviewed by an administrator before it goes live. This vulnerability allows those users to bypass the review process and immediately publish any type of content, including new pages, which could be used to deface a site or distribute unauthorized information.

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-2026-15286 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-15286 being exploited in the wild.

**How severe is CVE-2026-15286?** Medium severity, with a CVSS score of 4.3, published 10 July 2026.

**Which products and versions are affected?** StellarWP Kadence Blocks — Page Builder Toolkit for Gutenberg Editor 0 - 3.5.32.

**Is there a fix for CVE-2026-15286?** 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-2026-15286 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-15286?** 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 vulnerability is classified as an Incorrect Authorization (CWE-863) issue within the 'process_pattern' REST API endpoint. Specifically, the 'get_items_permission_check' function permission callback fails to properly validate user capabilities. An authenticated attacker with Contributor-level permissions or higher can exploit this to create and immediately publish posts or pages, bypassing the 'publish_posts' capability check usually enforced by the WordPress core review workflow. The issue is present in all versions up to and including 3.5.32; a fix was introduced in subsequent updates.

## Affected products

- StellarWP Kadence Blocks — Page Builder Toolkit for Gutenberg Editor 0 - 3.5.32

## Timeline

- 2026-07-10: disclosed: Initial publication of the CVE record.
- 2026-07-10: advisory: Wordfence published the vulnerability details.

## References

- [https://plugins.trac.wordpress.org/browser/kadence-blocks/trunk/includes/class-kadence-blocks-prebuilt-library-rest-api.php](https://plugins.trac.wordpress.org/browser/kadence-blocks/trunk/includes/class-kadence-blocks-prebuilt-library-rest-api.php)
- [https://plugins.trac.wordpress.org/browser/kadence-blocks/trunk/includes/class-kadence-blocks-prebuilt-library-rest-api.php](https://plugins.trac.wordpress.org/browser/kadence-blocks/trunk/includes/class-kadence-blocks-prebuilt-library-rest-api.php)
- [https://plugins.trac.wordpress.org/changeset/3445125/](https://plugins.trac.wordpress.org/changeset/3445125/)
- [https://www.wordfence.com/threat-intel/vulnerabilities/id/6e739eb4-6b8b-4bc7-a1e6-790180668c93?source=cve](https://www.wordfence.com/threat-intel/vulnerabilities/id/6e739eb4-6b8b-4bc7-a1e6-790180668c93?source=cve)

## 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)
- [StellarWP Kadence Blocks Stored XSS in Identity Block](https://junglewise.ai/threats/cve-2026-18062-stellarwp-kadence-blocks-stored-xss-in-identity-block)
- [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)