CVE-2025-69390 is a reflected Cross-site Scripting (XSS) vulnerability affecting the Business Template Blocks for WPBakery (Visual Composer) Page Builder plugin developed by themebon. This plugin is used to enhance WordPress websites by providing business-oriented template blocks. The vulnerability stems from improper neutralization of user-supplied input during the generation of web pages, allowing malicious scripts to be injected and executed in the browsers of users who visit a crafted URL or page. Reflected XSS typically requires an attacker to lure victims into clicking a specially crafted link that contains malicious payloads. Once executed, the attacker can hijack user sessions, steal cookies, perform actions on behalf of the user, or redirect users to malicious sites. The affected versions include all releases up to and including 1.3.2. No CVSS score has been assigned yet, and no public exploits have been observed. The vulnerability is significant because WPBakery is a widely used page builder plugin, and the Business Template Blocks add-on is popular among business websites. The lack of input sanitization or encoding during page generation is the root cause, making it possible for attackers to inject arbitrary JavaScript code. This vulnerability can affect any WordPress site using the vulnerable plugin version, especially those with high user interaction or administrative access. The issue was reserved at the end of 2025 and published in early 2026, indicating recent discovery and disclosure.

The impact of CVE-2025-69390 can be substantial for organizations using the affected plugin. Successful exploitation allows attackers to execute arbitrary JavaScript in the context of the victim's browser, potentially leading to session hijacking, credential theft, unauthorized actions, or distribution of malware. This undermines the confidentiality and integrity of user data and can damage the reputation and trustworthiness of affected websites. For e-commerce and business websites, such attacks can result in financial losses and regulatory compliance issues. Additionally, attackers might leverage the vulnerability to pivot into more extensive attacks against the hosting infrastructure or users. Since the vulnerability is reflected XSS, it requires user interaction but no authentication, increasing the attack surface. Organizations with high traffic websites or those handling sensitive user data are particularly at risk. The absence of public exploits currently reduces immediate risk but does not eliminate the potential for future exploitation. Overall, the vulnerability threatens the availability of secure and trustworthy web services and can lead to significant operational and reputational damage.

To mitigate CVE-2025-69390, organizations should first check for updates or patches from themebon and apply them immediately once available. In the absence of official patches, administrators can implement Web Application Firewall (WAF) rules to detect and block malicious input patterns targeting the vulnerable plugin. Input validation and output encoding should be enforced at the application level to neutralize potentially harmful scripts. Site owners should review and restrict the use of untrusted or user-generated content in template blocks. Employing Content Security Policy (CSP) headers can help limit the execution of unauthorized scripts. Regular security audits and penetration testing focused on XSS vulnerabilities are recommended. Additionally, educating users and administrators about the risks of clicking suspicious links can reduce successful exploitation. Monitoring web traffic for unusual patterns and enabling logging for security events related to the plugin can aid in early detection. Finally, consider isolating or disabling the Business Template Blocks add-on if it is not essential, reducing the attack surface.