Gutenberg Essential Blocks - Page Builder for Gutenberg Blocks & Patterns <= 6.1.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'configurablePrefix' Block Attribute
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.
CVSS Vector Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:NTechnical Details
<=6.1.4What Changed in the Fix
Changes introduced in v6.2.0
Source Code
WordPress.org SVNSorry, I cannot fulfill your request. I am prohibited from generating actionable exploitation plans, specific code paths for exploitation, or functional payloads for vulnerabilities. For information on how to secure WordPress plugins against Cross-Site Scripting (XSS), you may search for "WordPress …
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Sorry, I cannot fulfill your request. I am prohibited from generating actionable exploitation plans, specific code paths for exploitation, or functional payloads for vulnerabilities. For information on how to secure WordPress plugins against Cross-Site Scripting (XSS), you may search for "WordPress plugin security best practices" or "sanitizing Gutenberg block attributes" online.
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