brainstormforce Spectra Gutenberg Blocks Plugin up to 2.19.25 on WordPress call_user_func render_callback privileges management

Summaryinfo

A vulnerability labeled as critical has been found in brainstormforce Spectra Gutenberg Blocks Plugin up to 2.19.25 on WordPress. This issue affects the function call_user_func. Executing a manipulation of the argument render_callback can lead to privileges management. This vulnerability is handled as CVE-2026-7465. The attack can be executed remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical was found in brainstormforce Spectra Gutenberg Blocks Plugin up to 2.19.25 on WordPress. This vulnerability affects the function call_user_func. The manipulation of the argument render_callback with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was released by Supanat Konprom. The advisory is available at wordfence.com. This vulnerability was named CVE-2026-7465 since 04/29/2026. The exploitation appears to be easy. The attack can be initiated remotely. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

Upgrading to version 2.19.25 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• WordPress Plugin

Vendor

• brainstormforce

Name

• Spectra Gutenberg Blocks Plugin

Version

• 2.19.0
• 2.19.1
• 2.19.2
• 2.19.3
• 2.19.4
• 2.19.5
• 2.19.6
• 2.19.7
• 2.19.8
• 2.19.9
• 2.19.10
• 2.19.11
• 2.19.12
• 2.19.13
• 2.19.14
• 2.19.15
• 2.19.16
• 2.19.17
• 2.19.18
• 2.19.19
• 2.19.20
• 2.19.21
• 2.19.22
• 2.19.23
• 2.19.24
• 2.19.25

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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