BaseFortify

Publication date: 2025-10-15

Last updated on: 2025-11-26

Assigner: Wordfence

Description

The WPBakery Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the vc_custom_heading shortcode in all versions up to, and including, 8.6.1. This is due to insufficient restriction of allowed HTML tags and improper sanitization of user-supplied attributes in the font_container parameter. This makes it possible for authenticated attackers with contributor-level access or higher to inject arbitrary web scripts in posts that will execute whenever a user accesses an injected page via the vc_custom_heading shortcode with malicious tag and text attributes granted they have access to use WPBakery shortcodes.

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-10-15

Last Modified

2025-11-26

Generated

2026-07-06

AI Q&A

2025-10-15

EPSS Evaluated

2026-07-05

NVD

CVE-2025-11161

EUVD

EUVD-2025-34533

Affected Vendors & Products

Vendor	Product	Version / Range
wpbakery	page_builder	to 8.7 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-80	The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages.

Attack-Flow Graph

Executive Summary

This vulnerability is a Stored Cross-Site Scripting (XSS) issue in the WPBakery Page Builder plugin for WordPress, affecting all versions up to and including 8.6.1. It occurs because the plugin does not properly restrict allowed HTML tags and fails to sanitize user-supplied attributes in the font_container parameter of the vc_custom_heading shortcode. Authenticated users with contributor-level access or higher can inject malicious scripts into posts, which execute when other users view the affected page.

Impact Analysis

This vulnerability can allow attackers with contributor-level access or higher to inject arbitrary malicious scripts into posts. These scripts execute in the browsers of users who view the infected pages, potentially leading to theft of user credentials, session hijacking, defacement, or other malicious actions. It compromises the integrity and security of the website and its users.

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