---
id: CVE-2026-6173
title: >-
  The Bold Page Builder plugin for WordPress is vulnerable to Stored Cross-Site
  Scripting via the 'background_image' parameter of the plugin's bt_bb_section
  shortcode in all versions up to, and including, 5.7.2 due to insufficient
  input sa…
summary: >-
  The Bold Page Builder plugin for WordPress is vulnerable to Stored Cross-Site
  Scripting via the 'background_image' parameter of the plugin's bt_bb_section
  shortcode in all versions up to, and including, 5.7.2 due to insufficient
  input sa…
severity: medium
cvss: 6.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: boldthemes
product: Bold Page Builder
affected:
  - bold_page_builder <= 5.7.2
published: '2026-09-30'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T08:16:33.940'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-6173'
references:
  - url: >-
      https://plugins.trac.wordpress.org/changeset/3526548/bold-page-builder/trunk/content_elements/bt_bb_section/bt_bb_section.php
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/bbadef9e-1e2d-4bd2-800a-f9369b795728?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-30T07:59:43.034Z'
---

## Overview

The Bold Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'background_image' parameter of the plugin's bt_bb_section shortcode in all versions up to, and including, 5.7.2 due to insufficient input sanitization and output escaping on user-supplied attributes. 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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.