Cybersecurity Vulnerabilities

CVE-2025-66057: Urgent: DOM-Based XSS Found in Bold Page Builder WordPress Plugin

Overview

A Cross-Site Scripting (XSS) vulnerability, identified as CVE-2025-66057, has been discovered in the Bold Page Builder WordPress plugin. Specifically, this is a DOM-Based XSS vulnerability, affecting versions up to and including 5.5.2. This vulnerability allows attackers to inject malicious scripts into web pages, potentially compromising user data and website integrity.

Technical Details

CVE-2025-66057 is a DOM-Based XSS vulnerability. This means the vulnerability resides in client-side JavaScript code that improperly handles user-supplied input. An attacker can craft a malicious URL or manipulate existing page elements to inject arbitrary JavaScript code that will be executed within the user’s browser. The input is not properly neutralized during web page generation, allowing for the XSS attack. The Bold Page Builder plugin version 5.5.2 and earlier are impacted.

CVSS Analysis

Currently, the CVSS score for CVE-2025-66057 is not available (N/A). This may be due to the vulnerability being recently discovered or pending further analysis. However, given that it is a DOM-Based XSS vulnerability, the severity should not be underestimated, as it can lead to serious security breaches.

Possible Impact

A successful XSS attack via CVE-2025-66057 can have several severe consequences:

  • Data Theft: Attackers can steal sensitive user data, including cookies, session tokens, and personal information.
  • Account Takeover: Attackers can hijack user accounts by stealing session information.
  • Malware Distribution: Attackers can inject malicious scripts that redirect users to phishing sites or download malware.
  • Website Defacement: Attackers can modify the content of the website, displaying misleading or harmful information.

Mitigation and Patch Steps

To mitigate the risk posed by CVE-2025-66057, it is strongly recommended to take the following steps:

  1. Update Bold Page Builder: Immediately update the Bold Page Builder plugin to the latest version if a patch is available. Check the plugin developer’s website or the WordPress plugin repository for updates. If a patch greater than 5.5.2 exists, update to that version.
  2. Web Application Firewall (WAF): Implement or configure a Web Application Firewall (WAF) to filter malicious requests and block potential XSS attacks.
  3. Input Validation and Output Encoding: While a patch is pending, consider implementing custom input validation and output encoding techniques to sanitize user-supplied input and prevent the execution of malicious scripts. However, be aware that this is a temporary workaround and should not be considered a substitute for a proper patch.

References

Cybersecurity specialist and founder of Gowri Shankar Infosec - a professional blog dedicated to sharing actionable insights on cybersecurity, data protection, server administration, and compliance frameworks including SOC 2, PCI DSS, and GDPR.

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