Vulnerabilities / Bold Page Builder / WPSEC-2026-2879
Bold Page Builder <= 5.9.11 - Authenticated (Contributor+) Stored Cross-Site Scripting via Leaflet Map 'Additional map layers' Field
Medium 6.4
CWE-79Fixed in 5.9.12
- ID
- WPSEC-2026-2879
- Plugin
- Bold Page Builder (bold-page-builder)
- Affected
- all versions before 5.9.12
- Remediation
- Update to 5.9.12 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Weakness
- CWE-79
- Usage
- Plugin Medium · Affected versions Medium among sites WPSec scans, 2026-11-12
- Attack surface
- Bold Page Builder on WPSec AttackSurface
- Fix released
- Published
Description
The Bold Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Leaflet (OpenStreetMap) map element's custom style ('Additional map layers') field in all versions up to, and including, 5.9.11. This is due to the base64-encoded layer definitions bypassing WordPress's HTML filtering, with layer attribution text written into the page via innerHTML and tile URLs left unvalidated. This makes it possible for authenticated attackers with contributor-level access and above to inject arbitrary web scripts in pages that execute whenever a user accesses an injected page.
References
- https://wpsec.com/vuln/WPSEC-2026-2879/
- https://plugins.svn.wordpress.org/bold-page-builder/tags/5.9.12/
- https://wordpress.org/plugins/bold-page-builder/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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