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8.8

CVE-2026-7465: WordPress Spectra Gutenberg Blocks plugin allows hackers to run server code

CVE-2026-7465
Summary

An attacker with contributor-level access can execute server code on WordPress sites using the Spectra Gutenberg Blocks plugin. This can happen if a malicious user embeds two specific blocks of content in a post. To protect your site, update the plugin to the latest version.

Original title
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...
Original 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.
nvd CVSS3.1 8.8
Vulnerability type
CWE-269 Improper Privilege Management
Published: 30 May 2026 · Updated: 1 Jun 2026 · First seen: 30 May 2026