# CVE-2026-7465: Brainstorm Force Spectra Gutenberg Blocks Remote Code Execution

Source: https://junglewise.ai/threats/cve-2026-7465-brainstorm-force-spectra-gutenberg-blocks-remote-code-execution  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-30. Updated: 2026-05-30  
License: CC BY 4.0 with a link back

CVE-2026-7465 · Severity: high · CVSS 8.8 · Published 2026-05-30

Spectra, a popular WordPress plugin used to build websites with the Gutenberg editor, contains a security flaw that allows users with basic contributor access to run unauthorized code on the server. By creating a specially crafted post, an attacker can take full control of the website's hosting environment. This could lead to complete data theft, website defacement, or the installation of persistent malware.

Technologies: [Brainstorm Force Spectra Gutenberg Blocks – Website Builder for the Block Editor](https://junglewise.ai/threats/technologies/spectra). Vendors: [Brainstorm Force](https://junglewise.ai/threats/vendors/brainstorm-force).

## Quick answers

**Is CVE-2026-7465 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-7465 being exploited in the wild.

**How severe is CVE-2026-7465?** High severity, with a CVSS score of 8.8, published 30 May 2026.

**Which products and versions are affected?** Brainstorm Force Spectra Gutenberg Blocks – Website Builder for the Block Editor up to, and including, 2.19.25.

**Is there a fix for CVE-2026-7465?** 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-2026-7465 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-7465?** Check whether you run Brainstorm Force Spectra Gutenberg Blocks – Website Builder for the Block 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 Spectra Gutenberg Blocks plugin for WordPress is vulnerable to Remote Code Execution (RCE) in versions up to and including 2.19.25. The vulnerability exists due to the way the plugin handles block registration and rendering during sequential page requests. An authenticated attacker with Contributor-level access or higher can exploit this by embedding a two-block payload in post content. The first block registers a fake 'uagb/'-prefixed block type with an attacker-defined 'render_callback'. The second block of the same type then triggers the execution of that callback via the 'call_user_func()' function during the rendering process. This allows for arbitrary PHP code execution on the underlying server.

## Affected products

- Brainstorm Force Spectra Gutenberg Blocks – Website Builder for the Block Editor up to, and including, 2.19.25

## Timeline

- 2026-05-30: advisory: Vulnerability published by NVD/Wordfence

## References

- [https://plugins.trac.wordpress.org/browser/ultimate-addons-for-gutenberg/tags/2.19.25/classes/class-uagb-init-blocks.php](https://plugins.trac.wordpress.org/browser/ultimate-addons-for-gutenberg/tags/2.19.25/classes/class-uagb-init-blocks.php)
- [https://plugins.trac.wordpress.org/browser/ultimate-addons-for-gutenberg/tags/2.19.25/classes/class-uagb-init-blocks.php](https://plugins.trac.wordpress.org/browser/ultimate-addons-for-gutenberg/tags/2.19.25/classes/class-uagb-init-blocks.php)
- [https://plugins.trac.wordpress.org/browser/ultimate-addons-for-gutenberg/trunk/classes/class-uagb-init-blocks.php](https://plugins.trac.wordpress.org/browser/ultimate-addons-for-gutenberg/trunk/classes/class-uagb-init-blocks.php)
- [https://plugins.trac.wordpress.org/browser/ultimate-addons-for-gutenberg/trunk/classes/class-uagb-init-blocks.php](https://plugins.trac.wordpress.org/browser/ultimate-addons-for-gutenberg/trunk/classes/class-uagb-init-blocks.php)
- [https://wordpress.org/plugins/ultimate-addons-for-gutenberg/](https://wordpress.org/plugins/ultimate-addons-for-gutenberg/)
- [https://www.wordfence.com/threat-intel/vulnerabilities/id/60013752-d7cf-46e8-84e1-1b614f737b46?source=cve](https://www.wordfence.com/threat-intel/vulnerabilities/id/60013752-d7cf-46e8-84e1-1b614f737b46?source=cve)