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High · 8.8 Public exploit CVE-2026-7465 EUVD-2026-33454GHSA-m3v7-28jh-gr9j

Spectra Gutenberg Blocks <= 2.19.25 - Authenticated (Contributor+) Remote Code Execution via Arbitrary PHP Function Call via Block Attributes

Published May 30, 2026 · Updated Jun 1, 2026 · Assigned by Wordfence

Vendor: Brainstorm Force Product: Spectra Gutenberg Blocks – Website Builder for the Block Editor Category: Web / CMS

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.

Affected products

VendorProductAffectedFixed
brainstormforce Spectra Gutenberg Blocks – Website Builder for the Block Editor ≤ 2.19.25 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 2 repositories

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

References