Bold Page Builder <= 5.9.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'shortcode_content' Parameter
| CVE | CVE-2026-5920 |
|---|---|
| CVSS | 6.4 (Medium) |
| Publicly Published | September 15, 2026 |
| Last Updated | September 16, 2026 |
| Researcher |
suyoung kim(AhnLab)
- AhnLab
|
Description
The Bold Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'shortcode_content' parameter of the bt_bb_shortcode shortcode in all versions up to, and including, 5.9.6. This is due to a bypassable security filter (bt_bb_save_pre) that can be circumvented via null byte injection, combined with insufficient output sanitization of base64-decoded content in the bt_bb_raw_content shortcode handler. 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.
Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.
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Vulnerability Details for Bold Page Builder
| Software Type | Plugin |
|---|---|
| Software Slug | bold-page-builder (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 5.9.7, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in Bold Page Builder
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