CVE-2026-84028
Received Received - Intake

Bold Page Builder WordPress Plugin Authenticated Stored Cross-Site Scripting

Publication date: 2026-09-06

Last updated on: 2026-09-06

Assigner: WPScan

Description
The Bold Page Builder WordPress plugin before 5.9.9 does not sanitise and escape a shortcode attribute before outputting it in an HTML attribute, allowing users with the Contributor role and above to inject arbitrary web scripts that execute when a user views the affected page.

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Meta Information

Published
2026-09-06
Last Modified
2026-09-06
Generated
2026-09-27
AI Q&A
2026-09-06
EPSS Evaluated
2026-09-26
NVD
CVE-2026-84028
EUVD
EUVD-2026-72064

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
bold_page_builder plugin to 5.9.9 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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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.

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Executive Summary

This is a stored cross-site scripting (XSS) vulnerability in the Bold Page Builder WordPress plugin before version 5.9.9. It allows users with the Contributor role or higher to inject malicious scripts via the Slider Elements' additional_settings shortcode attribute. The plugin fails to sanitize and escape this attribute, causing the scripts to execute when other users view the affected page.

Detection Guidance

To detect this vulnerability, check if your Bold Page Builder plugin version is below 5.9.9. You can use WordPress admin panel to view the plugin version or run the command: wp plugin list --name='bold-page-builder' in WP-CLI.

Impact Analysis

An attacker with Contributor access or higher could inject malicious scripts into pages built with the plugin. When other users view these pages, the scripts could steal sensitive data, perform actions on their behalf, or redirect them to malicious sites. This could lead to account compromise, data theft, or further malware infections.

Compliance Impact

This vulnerability could lead to unauthorized access to user data, violating GDPR's data protection principles and HIPAA's security requirements. If exploited, it may result in data breaches, triggering mandatory breach notifications and potential fines under these regulations.

Mitigation Strategies

Immediately update the Bold Page Builder plugin to version 5.9.9 or later. If updating is not possible, consider disabling the plugin until the update is applied.

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