BaseFortify

Publication date: 2025-10-18

Last updated on: 2025-10-21

Assigner: Wordfence

Description

The Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'titleTag' attribute in all versions up to, and including, 5.7.1 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 Scores

EPSS Scores

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Meta Information

Published

2025-10-18

Last Modified

2025-10-21

Generated

2026-07-06

AI Q&A

2025-10-18

EPSS Evaluated

2026-07-05

NVD

CVE-2025-11270

Affected Vendors & Products

Vendor	Product	Version / Range
wordpress	essential_blocks	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-79	The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

Executive Summary

This vulnerability is a Stored Cross-Site Scripting (XSS) issue in the Gutenberg Essential Blocks WordPress plugin, specifically via the 'titleTag' attribute. It occurs because the plugin does not properly sanitize and escape input for this attribute, allowing authenticated users with Contributor-level access or higher to inject malicious JavaScript code. This malicious code is then stored and executed whenever any user views the affected page.

Impact Analysis

The vulnerability allows attackers with Contributor-level access or above to inject arbitrary scripts into pages. These scripts execute in the context of users who visit the infected pages, potentially leading to session hijacking, defacement, or other malicious actions that compromise user security and site integrity.

Mitigation Strategies

Update the Gutenberg Essential Blocks plugin to version 5.7.2 or later, which includes a fix that improves escaping of the 'titleTag' attribute to prevent stored cross-site scripting. This update replaces insecure escaping functions with safer ones, mitigating the vulnerability. [2]

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