# CVE-2026-6170: Bold Page Builder stored XSS in bt_bb_css_image_grid shortcode

Source: https://junglewise.ai/threats/cve-2026-6170-the-bold-page-builder-plugin-for-wordpress-is-vulnerable-to-stored  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-30. Updated: 2026-09-30  
License: CC BY 4.0 with a link back

CVE-2026-6170 · Severity: medium · CVSS 6.4 · Published 2026-09-30

The Bold Page Builder plugin for WordPress allows authenticated users with Contributor-level access to inject malicious scripts into pages via a shortcode parameter. These scripts execute when anyone views the affected pages, potentially stealing credentials or redirecting users to malicious sites. This requires the attacker to have a login account, limiting but not eliminating the risk to WordPress sites with user registration.

Technologies: [Bold Page Builder](https://junglewise.ai/threats/technologies/bold-page-builder-1). Vendors: [Bold](https://junglewise.ai/threats/vendors/bold).

## Quick answers

**Is CVE-2026-6170 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-6170 being exploited in the wild.

**How severe is CVE-2026-6170?** Medium severity, with a CVSS score of 6.4, published 30 September 2026.

**Which products and versions are affected?** Bold Page Builder up to and including 5.7.2.

**Is there a fix for CVE-2026-6170?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-6170 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-6170?** Check whether you run Bold Page Builder at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

Stored Cross-Site Scripting (XSS) vulnerability in the bt_bb_css_image_grid shortcode's 'images' parameter due to insufficient input sanitization and output escaping. Attack requires network access and Contributor-level or higher authentication to inject the payload; the script persists in the database and executes in the context of any user viewing the injected page. An attacker gains the ability to execute arbitrary JavaScript in visitors' browsers, potentially leading to session hijacking or credential theft.

## Affected products

- Bold Page Builder up to and including 5.7.2

## Timeline

- 2026-09-30: disclosed

## References

- [https://plugins.trac.wordpress.org/changeset/3526548/bold-page-builder/trunk/content_elements/bt_bb_css_image_grid/bt_bb_css_image_grid.php](https://plugins.trac.wordpress.org/changeset/3526548/bold-page-builder/trunk/content_elements/bt_bb_css_image_grid/bt_bb_css_image_grid.php)
- [https://www.wordfence.com/threat-intel/vulnerabilities/id/9b359cdd-840f-4a9b-9a2f-a28e64d73819?source=cve](https://www.wordfence.com/threat-intel/vulnerabilities/id/9b359cdd-840f-4a9b-9a2f-a28e64d73819?source=cve)

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