Bold Builder <= 5.5.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via bt_bb_tabs Shortcode

2026-02-06 17:29

Muhammad Yudha - DJ

Strategic Overview

Status

Unpatched

Affected PluginBold Page Builder

Affected Version<= 5.5.1

CVSS6.4Medium

CVECVE-2025-12803

View all Bold Page Builder vulnerabilities

Vulnerability Overview

The Bold Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin 'bt_bb_tabs' shortcode in all versions up to, and including, 5.5.1 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.

Technical Analysis

REMEDIATION: No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement. --- IDENTIFIER: CWE-80 (Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)) The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as <, >, and & that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages.

External References

https://www.cve.org/CVERecord?id=CVE-2025-12803 https://www.wordfence.com/threat-intel/vulnerabilities/id/64f30329-ecf2-4e30-bc23-9d447e239e08

CVSS Vector

6.4

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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