CVE-2026-7465: brainstormforce spectra gutenberg blocks – website builder for the block editor Improper Privilege Management

Vulnerability summary

CVE-2026-7465 is a high (CVSS 8.8) Improper Privilege Management vulnerability in brainstormforce spectra gutenberg blocks – website builder for the block editor. EPSS estimates a 0.97% chance of exploitation in the next 30 days, higher than 61.3% of scored vulnerabilities.

Timeline

1. 30-05-2026
   PublishedVulnerability first disclosed.
2. 01-06-2026
   Last modifiedVulnerability information updated.

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.

• CWE-269Improper Privilege ManagementThe product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.