CVE-2025-12159 MEDIUM

CVE-2025-12159: Bold Page Builder <= 5.4.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode

Vendor Boldthemes
Product Bold Page Builder
Weakness CWE-79 · XSS
Published February 7, 2026
Last update April 8, 2026

CVSS base score

6.4/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

The Bold Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's bt_bb_raw_content shortcode in all versions up to, and including, 5.4.8 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.

Explanation of Vulnerability in Simple Terms

02Summary

Bold Page Builder versions 5.4.8 and earlier contain a cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious scripts. The vulnerability has scope change, meaning injected code can affect other users or site functionality beyond the vulnerable component. An attacker with low-level site access can craft malicious input that executes in other users' browsers when they view affected pages.

What an attacker can do

03Attacker Capabilities

Inject malicious JavaScript that runs in other users' browsers and affects site functionality.

Potential impact on your site

04Site Impact

Authenticated attackers can steal session tokens, deface content, or redirect users to malicious sites.

Conditions required to exploit

05Prerequisites

Attacker must have a low-privilege account on the site; no user interaction required from victims.

Key dates

06Disclosure timeline

February 7, 2026 CVE published
April 8, 2026 Record updated