Spectra Gutenberg Blocks <= 2.19.25 - Authenticated (Contributor+) Remote Code Execution via Arbitrary PHP Function Call via Block Attributes
| CVE | CVE-2026-7465 |
|---|---|
| CVSS | 8.8 (High) |
| Publicly Published | May 29, 2026 |
| Last Updated | May 30, 2026 |
| Researcher |
kai63001
|
Description
The Spectra Gutenberg Blocks – Website Builder for the Block Editor plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 2.19.25. This makes it possible for authenticated attackers, with Contributor-level access and above, to execute code on the server. Exploitation requires a two-block payload embedded in post content: the first block registers a fake uagb/-prefixed block type with an attacker-specified render_callback, and the second block of the same fake type triggers invocation of that callback via call_user_func() during sequential block rendering in the same page request.
References
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- wordpress.org
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Vulnerability Details for Spectra Legacy – Gutenberg Blocks
| Software Type | Plugin |
|---|---|
| Software Slug | ultimate-addons-for-gutenberg (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 2.19.26, or a newer patched version |
| Affected Version |
|
| Patched Version |
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Recent vulnerabilities in Spectra Legacy – Gutenberg Blocks
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