cleantalk
Vulnerabilities and Security Researches

Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates, CVE-2026-10833

CVE, Research URL

CVE-2026-10833

Published on
Jun 25, 2026
Research Description
The Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'configurablePrefix' Block Attribute in all versions up to, and including, 6.1.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Affected versions
max 6.2.0.
Status
vulnerable