CVE-2026-24594 is a stored Cross-site Scripting (XSS) vulnerability identified in the Livemesh Addons for WPBakery Page Builder plugin, affecting all versions up to and including 3.9.4. The vulnerability stems from improper neutralization of user-supplied input during the generation of web pages, allowing malicious scripts to be injected and stored persistently within the website’s content. When a victim visits a compromised page, the malicious script executes in their browser context, potentially leading to session hijacking, credential theft, or unauthorized actions performed with the victim’s privileges. This vulnerability does not require authentication or user interaction beyond visiting the affected page, increasing its risk profile. The plugin is widely used in WordPress environments for enhancing page builder functionality, making many websites vulnerable if they have not applied patches or mitigations. Although no public exploits are currently known, the nature of stored XSS vulnerabilities makes them attractive targets for attackers aiming to compromise site visitors or administrators. The lack of a CVSS score indicates the need for an independent severity assessment based on the vulnerability’s characteristics and potential impact. The vulnerability’s exploitation could severely impact website confidentiality and integrity, with availability impact being limited but possible if combined with other attack vectors.

For European organizations, this vulnerability poses a significant risk to the confidentiality and integrity of their web applications and user data. Exploitation could lead to theft of sensitive information such as login credentials, personal data, or session tokens, enabling further compromise of internal systems or user accounts. Organizations relying on the Livemesh Addons for WPBakery Page Builder plugin for their WordPress sites may face reputational damage, regulatory penalties under GDPR for data breaches, and operational disruptions. Attackers could leverage the vulnerability to conduct phishing campaigns, spread malware, or pivot to internal networks if administrative credentials are compromised. The impact is particularly critical for sectors with high web presence and sensitive data handling, such as finance, healthcare, and government services. Additionally, stored XSS can facilitate persistent attacks that affect multiple users over time, increasing the scope of damage. The absence of known exploits in the wild suggests a window of opportunity for defenders to patch and mitigate before widespread exploitation occurs.

1. Monitor for and apply security patches from Livemesh promptly once available to address CVE-2026-24594. 2. Until patches are released, implement strict input validation and sanitization on all user inputs that interact with the plugin’s features, ensuring that scripts and HTML tags are neutralized. 3. Employ output encoding techniques to safely render user-generated content, preventing script execution in browsers. 4. Configure Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of injected code. 5. Conduct regular security audits and penetration testing focusing on web application vulnerabilities, including XSS. 6. Educate site administrators and developers on secure coding practices and the risks associated with third-party plugins. 7. Consider disabling or replacing the Livemesh Addons plugin if immediate patching is not feasible, especially on high-risk or sensitive websites. 8. Monitor web server and application logs for unusual activities that may indicate exploitation attempts. 9. Use Web Application Firewalls (WAFs) with rules designed to detect and block XSS payloads targeting this plugin.