What the vulnerability does
01Description
The Gutenverse – WordPress Blocks, Page Builder & Site Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 3.8.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with editor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Explanation of Vulnerability in Simple Terms
02Summary
Gutenverse contains a stored cross-site scripting (XSS) vulnerability in its page builder interface. An authenticated administrator with high privileges can inject malicious scripts that execute in the browsers of other users viewing affected pages. The vulnerability requires high attack complexity and affects the integrity and confidentiality of site data.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that run in other users' browsers when they view affected pages.
Potential impact on your site
04Site Impact
Compromised admin accounts could inject malicious code affecting site visitors and other administrators.
Conditions required to exploit
05Prerequisites
Attacker must be an authenticated administrator or high-privilege user; no user interaction required from victims.
Key dates
06Disclosure timeline
June 27, 2026
CVE published
June 29, 2026
Record updated
