Essential Blocks <= 4.4.2 - Unauthenticated Local File Inclusion

9.8
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVE CVE-2023-6623
CVSS 9.8 (Critical)
Publicly Published December 21, 2023
Last Updated February 6, 2024
Researcher Marc-Alexandre Montpas

Description

The Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates plugin for WordPress is vulnerable to Local File Inclusion in all versions up to, and including, 4.4.2 via the /wp-json/essential-blocks/v1/queries REST API endpoint. This makes it possible for unauthenticated attackers to include and execute arbitrary files on the server, allowing the execution of any PHP code in those files. This can be used to bypass access controls, obtain sensitive data, or achieve code execution in cases where images and other “safe” file types can be uploaded and included.

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Vulnerability Details for Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns

Software Type Plugin
Software Slug essential-blocks (view on wordpress.org)
Patched? Yes
Remediation Update to version 4.4.3, or a newer patched version
Affected Version
  • <= 4.4.2
Patched Version
  • 4.4.3

Recent vulnerabilities in Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns

# Title CVE ID CVSS Researchers Date
1 Gutenberg Essential Blocks <= 6.4.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'marker' Attribute CVE-2026-96256 6.4 Webbernaut September 30, 2026
2 Essential Blocks <= 6.3.0 - Unauthenticated Information Exposure CVE-2026-13154 5.3 Muni Nitish Kumar Yaddala August 3, 2026
3 Essential Blocks <= 6.3.0 - Unauthenticated Information Exposure CVE-2026-13153 5.3 Revanth Hari Narayana Matte August 3, 2026
4 Gutenberg Essential Blocks - Page Builder for Gutenberg Blocks & Patterns <= 6.1.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'configurablePrefix' Block Attribute CVE-2026-10833 6.4 Viet Anh Ngo June 24, 2026
5 Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns <= 6.1.3 - Authenticated (Author+) Server-Side Request Forgery CVE-2026-10586 7.2 Shambles June 4, 2026
6 Gutenberg Essential Blocks <= 6.0.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via Block Attributes CVE-2026-4658 6.4 AlexHenry, normaandersonfrank May 1, 2026
7 Essential Blocks <= 5.7.2 - Missing Authorization To Authenticated (Author+) Information Disclosure CVE-2025-11369 4.3 Dmitrii Ignatyev December 16, 2025
8 Essential Blocks <= 5.7.1 - Authenticated (Author+) Server-Side Request Forgery CVE-2025-11361 6.4 Dmitrii Ignatyev October 17, 2025
9 Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns <= 5.7.1 - Authenticated (Contributor+) Stored Cross-Site Scripting CVE-2025-11270 6.4 Rafshanzani Suhada October 17, 2025
10 Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates <= 5.4.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Slider and Post Carousel Widgets CVE-2025-4682 6.4 Webbernaut May 26, 2025

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